Remove Dead Code (#787)

Author: kartikayk

torchtune/models/llama2/__init__.py

@@ -4,7 +4,6 @@
 # This source code is licensed under the BSD-style license found in the
 # LICENSE file in the root directory of this source tree.
 
-from ._checkpoint_utils import convert_llama2_fair_format
 from ._component_builders import llama2, lora_llama2
 
 from ._model_builders import (  # noqa
@@ -19,7 +18,6 @@
 from ._model_utils import scale_hidden_dim_for_mlp
 
 __all__ = [
-    "convert_llama2_fair_format",
     "llama2",
     "llama2_7b",
     "llama2_tokenizer",