net/http/cgi: Remove hard-coded ServeHTTP timeout

Close #43624

Change-Id: Ifaea3d8ec2aeabbd923abf5edd7497172dbf855a
GitHub-Last-Rev: ea3ef953a1
GitHub-Pull-Request: golang/go#43803
Reviewed-on: https://go-review.googlesource.com/c/go/+/284778
Reviewed-by: Bryan C. Mills <bcmills@google.com>
Run-TryBot: Bryan C. Mills <bcmills@google.com>
Trust: Robert Findley <rfindley@google.com>
TryBot-Result: Go Bot <gobot@golang.org>

src/net/http/cgi/integration_test.go

@@ -95,12 +95,6 @@ func (w *limitWriter) Write(p []byte) (n int, err error) {
 func TestKillChildAfterCopyError(t *testing.T) {
 	testenv.MustHaveExec(t)
 
-	defer func() { testHookStartProcess = nil }()
-	proc := make(chan *os.Process, 1)
-	testHookStartProcess = func(p *os.Process) {
-		proc <- p
-	}
-
 	h := &Handler{
 		Path: os.Args[0],
 		Root: "/test.go",
@@ -112,26 +106,9 @@ func TestKillChildAfterCopyError(t *testing.T) {
 	const writeLen = 50 << 10
 	rw := &customWriterRecorder{&limitWriter{&out, writeLen}, rec}
 
-	donec := make(chan bool, 1)
+	h.ServeHTTP(rw, req)
-	go func() {
+	if out.Len() != writeLen || out.Bytes()[0] != 'a' {
-		h.ServeHTTP(rw, req)
+		t.Errorf("unexpected output: %q", out.Bytes())
-		donec <- true
-	}()
-
-	select {
-	case <-donec:
-		if out.Len() != writeLen || out.Bytes()[0] != 'a' {
-			t.Errorf("unexpected output: %q", out.Bytes())
-		}
-	case <-time.After(5 * time.Second):
-		t.Errorf("timeout. ServeHTTP hung and didn't kill the child process?")
-		select {
-		case p := <-proc:
-			p.Kill()
-			t.Logf("killed process")
-		default:
-			t.Logf("didn't kill process")
-		}
 	}
 }