assets loading removed from UiXmlReader. Use preload.json instead

src/frontend/UiDocument.h

@@ -24,8 +24,6 @@ struct uidocscript {
 
 using uinodes_map = std::unordered_map<std::string, std::shared_ptr<gui::UINode>>;
 
-class AssetsLoader;
-
 class UiDocument {
     std::string id;
     uidocscript script;
@@ -49,7 +47,7 @@ public:
     /* Collect map of all uinodes having identifiers */
     static void collect(uinodes_map& map, std::shared_ptr<gui::UINode> node);
 
-    static std::unique_ptr<UiDocument> read(AssetsLoader& loader, int env, std::string namesp, fs::path file);
+    static std::unique_ptr<UiDocument> read(int env, std::string namesp, fs::path file);
 };
 
 #endif // FRONTEND_UI_DOCUMENT_H_