fix: Syntax error in ProductsController - fix broken docblock

Fixed duplicate code and broken docblock comment that was causing PHP syntax error.
The multi_edit tool had issues with the large edit and left broken code.

includes/Api/ProductsController.php

@@ -918,13 +918,6 @@ class ProductsController {
 				continue;
 			}
 			
-			// Private meta (starts with _) - check if allowed
-			// Core has ZERO defaults - plugins register via filter
-			$allowed_private = apply_filters('woonoow/product_allowed_private_meta', [], $product);
-			
-			if (in_array($key, $allowed_private, true)) {
-				$meta_data[$key] = $value;
-			}
 		}
 		
 		return $meta_data;