Revert "Disable SymDispatchMode when torch.compile'ing (#132433)"

This reverts commit 63eb06c051.

Reverted https://github.com/pytorch/pytorch/pull/132433 on behalf of https://github.com/PaliC due to We need to now revert https://github.com/pytorch/pytorch/pull/132216 in OSS and there is a dependency on this pr ([comment](https://github.com/pytorch/pytorch/pull/132433#issuecomment-2274105080))

torch/_dynamo/convert_frame.py

@@ -25,7 +25,6 @@ from weakref import ReferenceType
 
 import torch
 import torch._logging
-import torch.fx.experimental._sym_dispatch_mode
 from torch._C._dynamo.guards import GlobalStateGuard
 from torch._dynamo.distributed import get_compile_pg
 from torch._guards import compile_context, CompileContext, CompileId, tracing
@@ -1228,9 +1227,7 @@ class CatchErrorsWrapper:
                         frame, cache_entry, self.hooks, frame_state
                     )
 
-        with (
-            compile_lock
-        ), _disable_current_modes(), torch.fx.experimental._sym_dispatch_mode.disable_sym_dispatch():
+        with compile_lock, _disable_current_modes():
             # skip=1: skip this frame
             return self._torchdynamo_orig_callable(
                 frame, cache_entry, self.hooks, frame_state, skip=1

torch/fx/experimental/_sym_dispatch_mode.py

@@ -1,5 +1,4 @@
 # mypy: allow-untyped-defs
-import contextlib
 from typing import List, Optional, Type
 
 
@@ -59,14 +58,3 @@ def handle_sym_dispatch(func, args, kwargs):
 
 def sym_function_mode():
     return SYM_FUNCTION_MODE
-
-
-@contextlib.contextmanager
-def disable_sym_dispatch():
-    global SYM_FUNCTION_MODE
-    old = SYM_FUNCTION_MODE
-    SYM_FUNCTION_MODE = None
-    try:
-        yield
-    finally:
-        SYM_FUNCTION_MODE = old