Remove ignore rule for cloud_license_enabled in ApplicationSetting

In the previous milestone, the cloud_license_enabled database column in
ApplicationSetting was removed. With the new milestone, the ignore rule
can now be safely removed as well.

app/models/application_setting.rb

@@ -10,7 +10,6 @@ class ApplicationSetting < ApplicationRecord
 
   ignore_columns %i[elasticsearch_shards elasticsearch_replicas], remove_with: '14.4', remove_after: '2021-09-22'
   ignore_column :seat_link_enabled, remove_with: '14.4', remove_after: '2021-09-22'
-  ignore_column :cloud_license_enabled, remove_with: '14.4', remove_after: '2021-09-22'
 
   INSTANCE_REVIEW_MIN_USERS = 50
   GRAFANA_URL_ERROR_MESSAGE = 'Please check your Grafana URL setting in ' \