public function removeRoleFeature($role_id, $feature_id)
 {
     try {
         FeatureRole::where('role_id', $role_id)->where('feature_id', $feature_id)->delete();
         return Redirect::to("/crm/role/{$role_id}")->withMessage(Generate::success_message('Success', 'Removed Successfully'));
     } catch (Exception $e) {
         return Redirect::to("/crm/role/{$role_id}")->withMessage(Generate::error_message('Fail', 'Failed to remove feature.'));
     }
 }