Remove FF for License Compliance rule

Feature flag is turned on by default so we can
remove it from the codebase

ee/app/controllers/projects/licenses_controller.rb

@@ -4,9 +4,6 @@ module Projects
   class LicensesController < Projects::ApplicationController
     before_action :authorize_read_licenses!, only: [:index]
     before_action :authorize_admin_software_license_policy!, only: [:create, :update]
-    before_action do
-      push_frontend_feature_flag(:license_compliance_denies_mr, default_enabled: true)
-    end
 
     def index
       respond_to do |format|

ee/app/models/ee/merge_request.rb

@@ -164,7 +164,6 @@ module EE
     end
 
     def has_denied_policies?
-      return false if ::Feature.disabled?(:license_compliance_denies_mr, project, default_enabled: true)
       return false unless has_license_scanning_reports?
 
       return false if has_approved_license_check?

ee/config/feature_flags/development/license_compliance_denies_mr.yml

----
-name: license_compliance_denies_mr
-introduced_by_url:
-rollout_issue_url:
-group: composition_analysis
-type: development
-default_enabled: true