test/bench/shootout: delete

We don't use these for benchmarking anymore.
Now we have the go1 dir and the benchmarks subrepo.
Some have problematic copyright notices, so move out of main repo.

Preserved in golang.org/x/exp/shootout.

Fixes #12688.
Fixes #13584.

Change-Id: Ic0b71191ca1a286d33d7813aca94bab1617a1c82
Reviewed-on: https://go-review.googlesource.com/18320
Reviewed-by: Ian Lance Taylor <[email protected]>

Author: rsc

src/cmd/dist/test.go

@@ -9,7 +9,6 @@ import (
 	"errors"
 	"flag"
 	"fmt"
-	"io/ioutil"
 	"log"
 	"os"
 	"os/exec"
@@ -502,25 +501,12 @@ func (t *tester) registerTests() {
 		}
 	}
 
-	// Doc and shootout tests only run on builders.
+	// Doc tests only run on builders.
 	// They find problems approximately never.
 	if t.hasBash() && t.goos != "nacl" && t.goos != "android" && !t.iOS() && os.Getenv("GO_BUILDER_NAME") != "" {
 		t.registerTest("doc_progs", "../doc/progs", "time", "go", "run", "run.go")
 		t.registerTest("wiki", "../doc/articles/wiki", "./test.bash")
 		t.registerTest("codewalk", "../doc/codewalk", "time", "./run")
-		for _, name := range t.shootoutTests() {
-			if name == "spectralnorm" {
-				switch os.Getenv("GO_BUILDER_NAME") {
-				case "linux-arm-arm5", "linux-mips64-minux":
-					// Heavy on floating point and takes over 20 minutes with
-					// softfloat on arm5 builder and over 33 minutes on MIPS64
-					// builder with kernel FPU emulator.
-					// Disabled per Issue 12688.
-					continue
-				}
-			}
-			t.registerSeqTest("shootout:"+name, "../test/bench/shootout", "time", "./timing.sh", "-test", name)
-		}
 	}
 
 	if t.goos != "android" && !t.iOS() {
@@ -994,18 +980,6 @@ func (t *tester) testDirTest(dt *distTest, shard, shards int) error {
 	return nil
 }
 
-func (t *tester) shootoutTests() []string {
-	sh, err := ioutil.ReadFile(filepath.Join(t.goroot, "test", "bench", "shootout", "timing.sh"))
-	if err != nil {
-		log.Fatal(err)
-	}
-	m := regexp.MustCompile(`(?m)^\s+run="([\w+ ]+)"\s*$`).FindSubmatch(sh)
-	if m == nil {
-		log.Fatal("failed to find run=\"...\" line in test/bench/shootout/timing.sh")
-	}
-	return strings.Fields(string(m[1]))
-}
-
 // mergeEnvLists merges the two environment lists such that
 // variables with the same name in "in" replace those in "out".
 // out may be mutated.