net: remove unixgram test sockets

Updates https://gcc.gnu.org/PR89406

Change-Id: Iccf2760e42e9caa90720b96e74a805a9c0d48f35
Reviewed-on: https://go-review.googlesource.com/c/163277
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Mikio Hara <mikioh.public.networking@gmail.com>
Reviewed-by: Than McIntosh <thanm@google.com>

src/net/listen_test.go

@@ -780,6 +780,9 @@ func TestListenConfigControl(t *testing.T) {
 				continue
 			}
 			c.Close()
+			if network == "unixgram" {
+				os.Remove(address)
+			}
 		}
 	})
 }

src/net/mockserver_test.go

@@ -17,8 +17,6 @@ import (
 )
 
 // testUnixAddr uses ioutil.TempFile to get a name that is unique.
-// It also uses /tmp directory in case it is prohibited to create UNIX
-// sockets in TMPDIR.
 func testUnixAddr() string {
 	f, err := ioutil.TempFile("", "go-nettest")
 	if err != nil {

src/net/splice_test.go

@@ -242,6 +242,7 @@ func testSpliceNoUnixgram(t *testing.T) {
 	if err != nil {
 		t.Fatal(err)
 	}
+	defer os.Remove(addr.Name)
 	up, err := ListenUnixgram("unixgram", addr)
 	if err != nil {
 		t.Fatal(err)