Remove column from project_settings

This commit removes project_settings.allow_editing_commit_messages
column. The column was previously ignored in 14.2, following the
process for column removal, the column can be removed in 14.3.

Related to https://gitlab.com/gitlab-org/gitlab/-/issues/336783

Changelog: other
MR: https://gitlab.com/gitlab-org/gitlab/-/merge_requests/68854

db/post_migrate/20210823193234_remove_allow_editing_commit_messages_from_project_settings.rb

+# frozen_string_literal: true
+
+class RemoveAllowEditingCommitMessagesFromProjectSettings < ActiveRecord::Migration[6.1]
+  include Gitlab::Database::MigrationHelpers
+
+  def up
+    return unless column_exists?(:project_settings, :allow_editing_commit_messages)
+
+    with_lock_retries do
+      remove_column :project_settings, :allow_editing_commit_messages
+    end
+  end
+
+  def down
+    with_lock_retries do
+      add_column :project_settings, :allow_editing_commit_messages, :boolean, default: false, null: false
+    end
+  end
+end

db/schema_migrations/20210823193234

+b85ef326056bb152d527e34b49caa3c40ee8685c3b14654992246c6adf082f8c
\ No newline at end of file

db/structure.sql

@@ -17343,7 +17343,6 @@ CREATE TABLE project_settings (
     squash_option smallint DEFAULT 3,
     has_confluence boolean DEFAULT false NOT NULL,
     has_vulnerabilities boolean DEFAULT false NOT NULL,
-    allow_editing_commit_messages boolean DEFAULT false NOT NULL,
     prevent_merge_without_jira_issue boolean DEFAULT false NOT NULL,
     cve_id_request_enabled boolean DEFAULT true NOT NULL,
     mr_default_target_self boolean DEFAULT false NOT NULL,