fix fallout in codegen-unit tests

Author: arielb1

src/test/codegen-units/item-collection/cross-crate-trait-method.rs

@@ -56,5 +56,3 @@ fn main()
     //~ TRANS_ITEM fn cgu_export_trait_method::{{impl}}[0]::without_default_impl_generic[0]<bool>
     let _: (char, bool) = Trait::without_default_impl_generic(false);
 }
-
-//~ TRANS_ITEM drop-glue i8

src/test/codegen-units/item-collection/generic-functions.rs

@@ -60,5 +60,3 @@ fn main() {
     //~ TRANS_ITEM fn generic_functions::foo3[0]<char, (), ()>
     let _ = foo3('v', (), ());
 }
-
-//~ TRANS_ITEM drop-glue i8

src/test/codegen-units/partitioning/local-generic.rs

@@ -56,5 +56,3 @@ mod mod2 {
         let _ = generic("abc");
     }
 }
-
-//~ TRANS_ITEM drop-glue i8