Update tests and checkfiles after impl class removal

```
Selected 36 tests drawn from previously failed tests

ok  1 - pos/S1.scala
ok  2 - pos/NoCyclicReference.scala
ok  3 - pos/A.scala
ok  4 - pos/S3.scala
ok  5 - pos/FPTest.scala
ok  6 - pos/List1.scala
!!  7 - pos/val_infer.scala                       [compilation failed]
!!  8 - pos/t6780.scala                           [compilation failed]
ok  9 - pos/MailBox.scala
ok 10 - pos/CustomGlobal.scala

!! 1 - neg/t2796.scala                           [compilation failed]
!! 2 - neg/val_sig_infer_struct.scala            [expected compilation failure]
!! 3 - neg/val_sig_infer_match.scala             [expected compilation failure]
!! 4 - neg/t5148.scala                           [output differs]

!!  1 - run/preinits.scala                        [compilation failed]
!!  2 - run/elidable-opt.scala                    [non-zero exit code]
!!  3 - run/elidable.scala                        [non-zero exit code]
!!  4 - run/t0936.scala                           [non-zero exit code]
!!  5 - run/parmap-ops.scala                      [non-zero exit code]
!!  6 - run/bugs.scala                            [output differs]
!!  7 - run/reflection-implClass.scala            [non-zero exit code]
!!  8 - run/synchronized.scala                    [non-zero exit code]
!!  9 - run/t5652                                 [non-zero exit code]
!! 10 - run/t4891                                 [output differs]
!! 11 - run/t4813.scala                           [non-zero exit code]
!! 12 - run/t7700.scala                           [output differs]
!! 13 - run/t8199.scala                           [non-zero exit code]
!! 14 - run/sbt-icode-interface.scala             [output differs]
!! 15 - run/trait_fields_bytecode.scala           [output differs]
!! 16 - run/trait-renaming                        [non-zero exit code]
!! 17 - run/t6733.scala                           [output differs]
!! 18 - run/trait_fields_final.scala              [output differs]
!! 19 - run/trait_fields_volatile.scala           [output differs]
!! 20 - run/t8549.scala                           [non-zero exit code]
!! 21 - run/t6028.scala                           [output differs]

!! 1 - jvm/innerClassAttribute                   [non-zero exit code]

test/partest --update-check \
  /Users/jason/code/scala/test/files/pos/t6780.scala \
  /Users/jason/code/scala/test/files/pos/val_infer.scala \
  /Users/jason/code/scala/test/files/neg/t2796.scala \
  /Users/jason/code/scala/test/files/neg/t5148.scala \
  /Users/jason/code/scala/test/files/neg/val_sig_infer_match.scala \
  /Users/jason/code/scala/test/files/neg/val_sig_infer_struct.scala \
  /Users/jason/code/scala/test/files/run/bugs.scala \
  /Users/jason/code/scala/test/files/run/elidable-opt.scala \
  /Users/jason/code/scala/test/files/run/elidable.scala \
  /Users/jason/code/scala/test/files/run/parmap-ops.scala \
  /Users/jason/code/scala/test/files/run/preinits.scala \
  /Users/jason/code/scala/test/files/run/reflection-implClass.scala \
  /Users/jason/code/scala/test/files/run/sbt-icode-interface.scala \
  /Users/jason/code/scala/test/files/run/synchronized.scala \
  /Users/jason/code/scala/test/files/run/t0936.scala \
  /Users/jason/code/scala/test/files/run/t4813.scala \
  /Users/jason/code/scala/test/files/run/t4891 \
  /Users/jason/code/scala/test/files/run/t5652 \
  /Users/jason/code/scala/test/files/run/t6028.scala \
  /Users/jason/code/scala/test/files/run/t6733.scala \
  /Users/jason/code/scala/test/files/run/t7700.scala \
  /Users/jason/code/scala/test/files/run/t8199.scala \
  /Users/jason/code/scala/test/files/run/t8549.scala \
  /Users/jason/code/scala/test/files/run/trait-renaming \
  /Users/jason/code/scala/test/files/run/trait_fields_bytecode.scala \
  /Users/jason/code/scala/test/files/run/trait_fields_final.scala \
  /Users/jason/code/scala/test/files/run/trait_fields_volatile.scala \
  /Users/jason/code/scala/test/files/jvm/innerClassAttribute

  ```

Author: retronym

test/files/instrumented/InstrumentationTest.check

@@ -1,4 +1,3 @@
-#partest !avian
 true
 Method call statistics:
     1  Foo1.<init>()V
@@ -7,8 +6,5 @@ Method call statistics:
     1  instrumented/Foo2.someMethod()I
     1  scala/DeprecatedConsole.<init>()V
     1  scala/Predef$.println(Ljava/lang/Object;)V
-    1  scala/io/AnsiColor$class.$init$(Lscala/io/AnsiColor;)V
+    1  scala/io/AnsiColor.$init$()V
     1  scala/runtime/BoxesRunTime.boxToBoolean(Z)Ljava/lang/Boolean;
-#partest avian
-!!!TEST SKIPPED!!!
-Instrumentation is not supported on Avian.

test/files/jvm/javaReflection.check

@@ -162,15 +162,7 @@ AT$D$ / AT.D$ (canon) / D$ (simple)
 - declared cls: List()
 - enclosing   : interface AT (declaring cls) / interface AT (cls) / null (constr) / null (meth)
 - properties  : false (local) / true (member)
-AT$class / AT$class (canon) / AT$class (simple)
-- declared cls: List()
-- enclosing   : null (declaring cls) / null (cls) / null (constr) / null (meth)
-- properties  : false (local) / false (member)
 T / T (canon) / T (simple)
 - declared cls: List()
 - enclosing   : null (declaring cls) / null (cls) / null (constr) / null (meth)
 - properties  : false (local) / false (member)
-T$class / T$class (canon) / T$class (simple)
-- declared cls: List()
-- enclosing   : null (declaring cls) / null (cls) / null (constr) / null (meth)
-- properties  : false (local) / false (member)

test/files/run/analyzerPlugins.check

@@ -21,7 +21,6 @@ lub(List(Int @testAnn, Int)) [1]
 pluginsPt(?, Trees$Annotated) [7]
 pluginsPt(?, Trees$Apply) [11]
 pluginsPt(?, Trees$ApplyImplicitView) [2]
-pluginsPt(?, Trees$Assign) [7]
 pluginsPt(?, Trees$Block) [4]
 pluginsPt(?, Trees$ClassDef) [2]
 pluginsPt(?, Trees$DefDef) [14]
@@ -31,9 +30,9 @@ pluginsPt(?, Trees$Literal) [16]
 pluginsPt(?, Trees$New) [5]
 pluginsPt(?, Trees$PackageDef) [1]
 pluginsPt(?, Trees$Return) [1]
-pluginsPt(?, Trees$Select) [50]
+pluginsPt(?, Trees$Select) [43]
 pluginsPt(?, Trees$Super) [2]
-pluginsPt(?, Trees$This) [20]
+pluginsPt(?, Trees$This) [13]
 pluginsPt(?, Trees$TypeApply) [3]
 pluginsPt(?, Trees$TypeBoundsTree) [2]
 pluginsPt(?, Trees$TypeDef) [1]
@@ -47,23 +46,19 @@ pluginsPt(Boolean @testAnn, Trees$Literal) [1]
 pluginsPt(Boolean @testAnn, Trees$Select) [1]
 pluginsPt(Boolean, Trees$Apply) [1]
 pluginsPt(Boolean, Trees$Ident) [1]
-pluginsPt(Boolean, Trees$Literal) [1]
 pluginsPt(Double, Trees$Select) [1]
 pluginsPt(Int @testAnn, Trees$Literal) [1]
 pluginsPt(Int, Trees$Apply) [1]
-pluginsPt(Int, Trees$Ident) [2]
-pluginsPt(Int, Trees$If) [1]
-pluginsPt(Int, Trees$Literal) [5]
+pluginsPt(Int, Trees$Ident) [1]
+pluginsPt(Int, Trees$Literal) [4]
 pluginsPt(Int, Trees$Select) [3]
-pluginsPt(List, Trees$Apply) [1]
 pluginsPt(List[Any], Trees$Select) [1]
 pluginsPt(String @testAnn, Trees$Select) [1]
 pluginsPt(String, Trees$Apply) [1]
 pluginsPt(String, Trees$Block) [2]
-pluginsPt(String, Trees$Ident) [4]
+pluginsPt(String, Trees$Ident) [3]
 pluginsPt(String, Trees$Literal) [1]
 pluginsPt(String, Trees$Select) [1]
-pluginsPt(String, Trees$Typed) [1]
 pluginsPt(Unit, Trees$Assign) [1]
 pluginsPt(testAnn, Trees$Apply) [5]
 pluginsTypeSig(<none>, Trees$Template) [2]
@@ -119,7 +114,7 @@ pluginsTyped(=> Int, Trees$TypeApply) [1]
 pluginsTyped(=> String @testAnn, Trees$Select) [1]
 pluginsTyped(A, Trees$Apply) [1]
 pluginsTyped(A, Trees$Ident) [2]
-pluginsTyped(A, Trees$This) [8]
+pluginsTyped(A, Trees$This) [1]
 pluginsTyped(A, Trees$TypeTree) [4]
 pluginsTyped(A.super.type, Trees$Super) [1]
 pluginsTyped(A.this.type, Trees$This) [11]
@@ -128,25 +123,23 @@ pluginsTyped(AnyRef, Trees$Select) [4]
 pluginsTyped(Array[Any], Trees$ArrayValue) [1]
 pluginsTyped(Boolean @testAnn, Trees$Select) [1]
 pluginsTyped(Boolean @testAnn, Trees$TypeTree) [4]
-pluginsTyped(Boolean(false), Trees$Literal) [2]
+pluginsTyped(Boolean(false), Trees$Literal) [1]
 pluginsTyped(Boolean, Trees$Apply) [1]
-pluginsTyped(Boolean, Trees$Select) [4]
+pluginsTyped(Boolean, Trees$Select) [3]
 pluginsTyped(Char('c'), Trees$Literal) [2]
 pluginsTyped(Double, Trees$Apply) [3]
 pluginsTyped(Double, Trees$Select) [6]
 pluginsTyped(Int @testAnn, Trees$TypeTree) [2]
 pluginsTyped(Int @testAnn, Trees$Typed) [2]
-pluginsTyped(Int(0), Trees$Literal) [3]
+pluginsTyped(Int(0), Trees$Literal) [2]
 pluginsTyped(Int(1) @testAnn, Trees$Typed) [1]
 pluginsTyped(Int(1), Trees$Literal) [8]
 pluginsTyped(Int(2), Trees$Literal) [1]
 pluginsTyped(Int, Trees$Apply) [1]
-pluginsTyped(Int, Trees$Ident) [2]
-pluginsTyped(Int, Trees$If) [2]
-pluginsTyped(Int, Trees$Select) [15]
+pluginsTyped(Int, Trees$Ident) [1]
+pluginsTyped(Int, Trees$If) [1]
+pluginsTyped(Int, Trees$Select) [12]
 pluginsTyped(Int, Trees$TypeTree) [13]
-pluginsTyped(List, Trees$Apply) [1]
-pluginsTyped(List, Trees$Select) [1]
 pluginsTyped(List[Any], Trees$Apply) [1]
 pluginsTyped(List[Any], Trees$Select) [1]
 pluginsTyped(List[Any], Trees$TypeTree) [3]
@@ -159,15 +152,13 @@ pluginsTyped(String(""), Trees$Literal) [2]
 pluginsTyped(String("huhu"), Trees$Literal) [1]
 pluginsTyped(String("str") @testAnn, Trees$Typed) [1]
 pluginsTyped(String("str"), Trees$Literal) [1]
-pluginsTyped(String("str"), Trees$Typed) [1]
 pluginsTyped(String("two"), Trees$Literal) [2]
 pluginsTyped(String, Trees$Apply) [2]
 pluginsTyped(String, Trees$Block) [2]
-pluginsTyped(String, Trees$Ident) [1]
-pluginsTyped(String, Trees$Select) [9]
+pluginsTyped(String, Trees$Select) [7]
 pluginsTyped(String, Trees$TypeTree) [7]
 pluginsTyped(Unit, Trees$Apply) [2]
-pluginsTyped(Unit, Trees$Assign) [8]
+pluginsTyped(Unit, Trees$Assign) [1]
 pluginsTyped(Unit, Trees$Block) [4]
 pluginsTyped(Unit, Trees$If) [1]
 pluginsTyped(Unit, Trees$Literal) [5]

test/files/run/mixin-signatures.check

@@ -48,12 +48,30 @@ class Test$bar5$ {
   public java.lang.Object Test$bar5$.h(java.lang.Object)
 }
 
-class Foo1$class {
-  public static java.lang.String Foo1$class.f(Foo1,java.lang.Object)
+interface Foo1 {
+  public abstract java.lang.Object Base.f(java.lang.Object)
+    generic: public abstract R Base.f(T)
+  public default java.lang.String Foo1.f(java.lang.Object)
+    generic: public default java.lang.String Foo1.f(T)
+  public abstract java.lang.Object Base.g(java.lang.Object)
+    generic: public abstract R Base.g(T)
+  public abstract java.lang.String Foo1.g(java.lang.Object)
+    generic: public abstract java.lang.String Foo1.g(T)
+  public default java.lang.Object Base.h(java.lang.Object)
+    generic: public default R Base.h(T)
 }
 
-class Foo2$class {
-  public static java.lang.Object Foo2$class.f(Foo2,java.lang.String)
+interface Foo2 {
+  public abstract java.lang.Object Base.f(java.lang.Object)
+    generic: public abstract R Base.f(T)
+  public default java.lang.Object Foo2.f(java.lang.String)
+    generic: public default R Foo2.f(java.lang.String)
+  public abstract java.lang.Object Base.g(java.lang.Object)
+    generic: public abstract R Base.g(T)
+  public abstract java.lang.Object Foo2.g(java.lang.String)
+    generic: public abstract R Foo2.g(java.lang.String)
+  public default java.lang.Object Base.h(java.lang.Object)
+    generic: public default R Base.h(T)
 }
 
 000000000000000000000000000000000000

test/files/run/mixin-signatures.scala

@@ -99,7 +99,7 @@ object Test {
 
   def main(args: Array[String]): Unit = {
     List(bar1, bar2, bar3, bar4, bar5) foreach show
-    List("Foo1$class", "Foo2$class") foreach show
+    List("Foo1", "Foo2") foreach show
     println(go)
   }
-}
+}