chore(fixit): remove redundant region tags (#11722)

Manually searched docs and confirmed no references remain. Only removed comments, no code changes.

Removed these tags:
run_helloworld_service
run_pubsub_handler

Author: briandorsey

run/helloworld/main.py

@@ -13,7 +13,6 @@
 # limitations under the License.
 
 # [START cloudrun_helloworld_service]
-# [START run_helloworld_service]
 import os
 
 from flask import Flask
@@ -30,5 +29,4 @@ def hello_world():
 
 if __name__ == "__main__":
     app.run(debug=True, host="0.0.0.0", port=int(os.environ.get("PORT", 8080)))
-# [END run_helloworld_service]
 # [END cloudrun_helloworld_service]

run/pubsub/main.py

@@ -24,7 +24,6 @@
 
 
 # [START cloudrun_pubsub_handler]
-# [START run_pubsub_handler]
 @app.route("/", methods=["POST"])
 def index():
     """Receive and parse Pub/Sub messages."""
@@ -50,5 +49,4 @@ def index():
     return ("", 204)
 
 
-# [END run_pubsub_handler]
 # [END cloudrun_pubsub_handler]