Remove ignoring framework column for compliance project settings

Removes the ignore statement on framework column for
compliance management frameworks. This column was removed months ago
and is no longer used.

Changelog: removed
EE: true

ee/app/models/compliance_management/compliance_framework/project_settings.rb

@@ -5,13 +5,9 @@ require_dependency 'compliance_management/compliance_framework'
 module ComplianceManagement
   module ComplianceFramework
     class ProjectSettings < ApplicationRecord
-      include IgnorableColumns
-
       self.table_name = 'project_compliance_framework_settings'
       self.primary_key = :project_id
 
-      ignore_columns :framework, remove_after: '2020-12-06', remove_with: '13.7'
-
       belongs_to :project
       belongs_to :compliance_management_framework, class_name: "ComplianceManagement::Framework", foreign_key: :framework_id