code review 6499091: net: change cname lookup test target to iana.org

src/pkg/net/dialgoogle_test.go

Index: src/pkg/net/dialgoogle_test.go
===================================================================
--- a/src/pkg/net/dialgoogle_test.go
+++ b/src/pkg/net/dialgoogle_test.go
@@ -41,17 +41,6 @@
 	fd.Close()
 }
 
-func TestLookupCNAME(t *testing.T) {
-	if testing.Short() || !*testExternal {
-		t.Logf("skipping test to avoid external network")
-		return
-	}
-	cname, err := LookupCNAME("www.google.com")
-	if !strings.HasSuffix(cname, ".l.google.com.") || err != nil {
-		t.Errorf(`LookupCNAME("www.google.com.") = %q, %v, want "*.l.google.com.", nil`, cname, err)
-	}
-}
-
 var googleaddrsipv4 = []string{
 	"%d.%d.%d.%d:80",
 	"www.google.com:80",