simplify - remove before/afterParse and create Parser on stack in worker thread

src/map/tile_data.cpp

@@ -79,11 +79,8 @@ void TileData::cancel() {
     }
 }
 
-void TileData::beforeParse() {}
-
-void TileData::reparse() {
-    beforeParse();
-
+void TileData::reparse()
+{
     // We're creating a new work request. The work request deletes itself after it executed
     // the after work handler
     new uv::work<util::ptr<TileData>>(
@@ -92,10 +89,7 @@ void TileData::reparse() {
             tile->parse();
         },
         [](util::ptr<TileData> &tile) {
-            tile->afterParse();
             tile->map.update();
         },
         shared_from_this());
 }
-
-void TileData::afterParse() {}