Revert "Record the pre-graph bytecode using fast record function event (#154974)"

Summary:
This reverts commit bee9c70c5d4b681ec1f2adf92eca1205b372634a.

Reverted pytorch/pytorch#154974 on behalf of https://github.com/malfet due to Broke inductor tests, see https://hud.pytorch.org/hud/pytorch/pytorch/3c72b9fd8feed4588a040bc681ffe83cc7acd26d/1?per_page=50&name_filter=inductor%20%2F%20unit&mergeEphemeralLF=true ([comment](pytorch/pytorch#154974 (comment)))

Reviewed By: seemethere

Differential Revision: D76048603

fbshipit-source-id: 6e254f3cd7b65befc2270bfecaee98c5b74f02c5

Author: generatedunixname499836121

userbenchmark/dynamo/dynamobench/_dynamo/utils.py

@@ -47,7 +47,7 @@
 import warnings
 import weakref
 from collections import Counter, OrderedDict
-from contextlib import AbstractContextManager, contextmanager
+from contextlib import contextmanager
 from dataclasses import is_dataclass
 from functools import lru_cache
 from types import MethodWrapperType
@@ -4674,17 +4674,3 @@ def maybe_disable_inference_mode_for_fake_prop() -> Generator[None, None, None]:
 
 def is_node_meta_valid(node: Optional[torch.fx.Node]) -> bool:
     return node is None or "example_value" in node.meta or "val" in node.meta
-
-
-def record_pregraph_bytecode_enter() -> AbstractContextManager[None]:
-    cm: AbstractContextManager[None] = (
-        torch._C._profiler._RecordFunctionFast("Pregraph bytecode")
-        if torch.autograd.profiler._is_profiler_enabled
-        else contextlib.nullcontext()
-    )
-    cm.__enter__()
-    return cm
-
-
-def record_pregraph_bytecode_exit(cm: AbstractContextManager[None]) -> None:
-    cm.__exit__(None, None, None)