refactor(admin): remove content-type resource/post module option

inc/helpers/aksrt-resource.php

@@ -443,19 +443,6 @@ if (!function_exists('aksrt_is_resource_archive')) {
     }
 }
 
-/**
- * Normalize homepage-module content scope.
- * Values: post | resource (resource = posts marked _aksrt_is_resource).
- */
-if (!function_exists('aksrt_normalize_content_scope')) {
-    function aksrt_normalize_content_scope($scope): string {
-        $scope = sanitize_key((string) $scope);
-        if ($scope === 'resource') {
-            return 'resource';
-        }
-        return 'post';
-    }
-}
 
 if (!function_exists('aksrt_detect_cloud_service')) {
     /**