remove patch fix for phi (#664)

src/axolotl/utils/models.py

@@ -1,5 +1,4 @@
 """Module for models and model loading"""
-import importlib
 import logging
 import math
 import os
@@ -176,20 +175,6 @@ def load_model(
         LOG.info("patching _expand_mask")
         hijack_expand_mask()
 
-    # special handling b/c remote MixFormers code doesn't have _no_split_modules set
-    if (
-        "MixFormerSequentialConfig" in model_config.__class__.__name__
-        and cfg.model_type == "AutoModelForCausalLM"
-    ):
-        module_name = model_config.__class__.__module__.replace(
-            ".configuration_mixformer_sequential", ".modeling_mixformer_sequential"
-        )
-        modeling_phi = importlib.import_module(module_name)
-        # pylint:disable=protected-access
-        modeling_phi.MixFormerSequentialForCausalLM._no_split_modules = [
-            "ParallelBlock"
-        ]
-
     model_kwargs = {}
     if cfg.model_revision:
         model_kwargs["revision"] = cfg.model_revision