Fixes #405
"drupal/drupal-extension" was added when moving from travis to circle ci .
As currently we are using Github action we don't need this library and can be safely removed.
This issue is similar to https://github.com/apigee/apigee-edge-drupal/issues/757
Fixes #405 "drupal/drupal-extension" was added when moving from travis to circle ci . As currently we are using Github action we don't need this library and can be safely removed. This issue is similar to https://github.com/apigee/apigee-edge-drupal/issues/757