pubsub: skip TestIntegration_LargePublishSize

Updates #1636

Change-Id: Ia841f0e7e5521544c32d9661cf0cda0e37fed1ae
Reviewed-on: https://code-review.googlesource.com/c/gocloud/+/47390
Reviewed-by: kokoro <noreply+kokoro@google.com>
Reviewed-by: Cody Oss <codyoss@google.com>
diff --git a/pubsub/integration_test.go b/pubsub/integration_test.go
index b525a03..cf3147a 100644
--- a/pubsub/integration_test.go
+++ b/pubsub/integration_test.go
@@ -346,6 +346,7 @@
 }
 
 func TestIntegration_LargePublishSize(t *testing.T) {
+	t.Skip("https://github.com/googleapis/google-cloud-go/issues/1636")
 	ctx := context.Background()
 	client := integrationTestClient(ctx, t)
 	defer client.Close()