Remove ignore_column :remove_on_close from Label model

app/models/label.rb

@@ -9,10 +9,6 @@ class Label < ApplicationRecord
   include Sortable
   include FromUnion
   include Presentable
-  include IgnorableColumns
-
-  # TODO: Project#create_labels can remove column exception when this column is dropped from all envs
-  ignore_column :remove_on_close, remove_with: '14.1', remove_after: '2021-06-22'
 
   cache_markdown_field :description, pipeline: :single_line
 

app/models/project.rb

@@ -1426,8 +1426,7 @@ class Project < ApplicationRecord
   # rubocop: disable CodeReuse/ServiceClass
   def create_labels
     Label.templates.each do |label|
-      # TODO: remove_on_close exception can be removed after the column is dropped from all envs
-      params = label.attributes.except('id', 'template', 'created_at', 'updated_at', 'type', 'remove_on_close')
+      params = label.attributes.except('id', 'template', 'created_at', 'updated_at', 'type')
       Labels::FindOrCreateService.new(nil, self, params).execute(skip_authorization: true)
     end
   end