chore: removing twilio sample

Signed-off-by: Jennifer Davis <[email protected]>

Author: iennae

.github/workflows/appengine-twilio.yaml

@@ -13,7 +13,6 @@
   "appengine/static-files",
   "appengine/storage/flexible",
   "appengine/storage/standard",
-  "appengine/twilio",
   "appengine/typescript",
   "appengine/websockets",
   "asset/snippets",