net/http/httptest: delete TestIssue7264

Now it's failing on Windows:

panic: httptest: failed to listen on a port: listen tcp 127.0.0.1:0:
listen: An operation on a socket could not be performed because the
system lacked sufficient buffer space or because a queue was full.

Since we can't seem to understand what the test is trying to test,
and because it is causing problems on multiple systems,
delete it.

Fixes #7264.

TBR=bradfitz
CC=brainman, golang-codereviews
https://golang.org/cl/141210043

src/pkg/net/http/httptest/server_test.go

@@ -8,7 +8,6 @@ import (
 	"io/ioutil"
 	"net/http"
 	"testing"
-	"time"
 )
 
 func TestServer(t *testing.T) {
@@ -28,25 +27,3 @@ func TestServer(t *testing.T) {
 		t.Errorf("got %q, want hello", string(got))
 	}
 }
-
-func TestIssue7264(t *testing.T) {
-	for i := 0; i < 1000; i++ {
-		func() {
-			ts := NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {}))
-			defer ts.Close()
-			tr := &http.Transport{
-				ResponseHeaderTimeout: time.Nanosecond,
-			}
-			defer tr.CloseIdleConnections()
-			c := &http.Client{Transport: tr}
-			res, err := c.Get(ts.URL)
-			// err can be non-nil here.
-			// If the client writes the header and then immediately observes
-			// the timeout and closes the connection, the server might never
-			// have gotten a chance to send a response. That's okay.
-			if err == nil {
-				res.Body.Close()
-			}
-		}()
-	}
-}