AnyStr cleanup (#5487)

* Replace all uses of StrPath, BytesPath, and AnyPath in Python 2 stubs.
* Add StrOrBytesPath as preferred alias for AnyPath.
* Replace all remaining AnyPath instances with StrOrBytesPath.
* Mark AnyPath as obsolete.

Part of #5470

stdlib/cProfile.pyi

@@ -1,5 +1,5 @@
 import sys
-from _typeshed import AnyPath
+from _typeshed import StrOrBytesPath
 from types import CodeType
 from typing import Any, Callable, Dict, Optional, Tuple, TypeVar, Union
 
@@ -20,7 +20,7 @@ class Profile:
     def enable(self) -> None: ...
     def disable(self) -> None: ...
     def print_stats(self, sort: Union[str, int] = ...) -> None: ...
-    def dump_stats(self, file: AnyPath) -> None: ...
+    def dump_stats(self, file: StrOrBytesPath) -> None: ...
     def create_stats(self) -> None: ...
     def snapshot_stats(self) -> None: ...
     def run(self: _SelfT, cmd: str) -> _SelfT: ...