Remove Wan2 model files, including configuration, attention mechanisms, and utility functions, to streamline the codebase and eliminate unused components. This cleanup enhances maintainability and focuses on the core functionality of the Wan2 module.

tests/test_wan_lora.py

@@ -331,7 +331,7 @@ class TestEndToEnd:
     """End-to-end LoRA loading and application."""
 
     def test_load_and_apply_loras(self):
-        from mlx_video.models.wan2.convert import load_and_apply_loras
+        from mlx_video.models.wan_2.convert import load_and_apply_loras
 
         with tempfile.TemporaryDirectory() as tmp:
             # Create mock LoRA safetensors