We installed Wordpress on GAE to test the performance and decided to remove it after all. It was linked to a Bitbucket install and an empty version was deployed to remove Wordpress. However, even if the latest build being pushed has zero files (other than index.php & app.yaml), a wp-cron.php file runs every 15min.
I also cannot turn off GAE as a service because our Firebase apps rely on it for some reason. Any idea?
You have to edit the cron.yaml file so that it only contains cron: and redeploy it (source)