Merge branch 'ab/remove-partitioning-ff' into 'master'

Remove feature flag for partition creation

See merge request gitlab-org/gitlab!39620

lib/gitlab/database/partitioning/partition_creator.rb

@@ -24,8 +24,6 @@ module Gitlab
         end
 
         def create_partitions
-          return unless Feature.enabled?(:postgres_dynamic_partition_creation, default_enabled: true)
-
           Gitlab::AppLogger.info("Checking state of dynamic postgres partitions")
 
           models.each do |model|