Remove unused system editor files from YAZE project configuration

- Deleted references to `system_editor.cc` and `system_editor.h` from YAZE.vcxproj and YAZE.vcxproj.filters to clean up the project structure.
- Updated `room_object.cc` to use a direct assignment for `gfx::TileInfo` and commented out unused code in `room.cc` and `tracker.cc` for clarity and future reference.

src/app/zelda3/dungeon/room.cc

@@ -681,7 +681,7 @@ void Room::LoadPits() {
   auto rom_data = rom()->vector();
   
   // Load pit data from pit_pointer
-  int pit_count = rom_data[pit_count + 1] << 8 | rom_data[pit_count];
+  // int pit_count = rom_data[pit_count + 1] << 8 | rom_data[pit_count];
   
   // For now, create placeholder pit objects
   // TODO: Implement full pit loading from ROM data