python3: remove _subprocess (#4022)

This doesn't seem to exist in Python 3.5, which is the earliest Python3
we support, and this folder is in stdlib/3

Co-authored-by: hauntsaninja <>

stdlib/3/_subprocess.pyi

@@ -1,38 +0,0 @@
-# Stubs for _subprocess
-
-# NOTE: These are incomplete!
-
-from typing import Mapping, Any, Tuple
-
-CREATE_NEW_CONSOLE: int
-CREATE_NEW_PROCESS_GROUP: int
-STD_INPUT_HANDLE: int
-STD_OUTPUT_HANDLE: int
-STD_ERROR_HANDLE: int
-SW_HIDE: int
-STARTF_USESTDHANDLES: int
-STARTF_USESHOWWINDOW: int
-INFINITE: int
-DUPLICATE_SAME_ACCESS: int
-WAIT_OBJECT_0: int
-
-# TODO not exported by the Python module
-class Handle:
-    def Close(self) -> None: ...
-
-def GetVersion() -> int: ...
-def GetExitCodeProcess(handle: Handle) -> int: ...
-def WaitForSingleObject(handle: Handle, timeout: int) -> int: ...
-def CreateProcess(executable: str, cmd_line: str,
-                  proc_attrs, thread_attrs,
-                  inherit: int, flags: int,
-                  env_mapping: Mapping[str, str],
-                  curdir: str,
-                  startupinfo: Any) -> Tuple[Any, Handle, int, int]: ...
-def GetModuleFileName(module: int) -> str: ...
-def GetCurrentProcess() -> Handle: ...
-def DuplicateHandle(source_proc: Handle, source: Handle, target_proc: Handle,
-                    target: Any, access: int, inherit: int) -> int: ...
-def CreatePipe(pipe_attrs, size: int) -> Tuple[Handle, Handle]: ...
-def GetStdHandle(arg: int) -> int: ...
-def TerminateProcess(handle: Handle, exit_code: int) -> None: ...

tests/stubtest_whitelists/py3_common.txt

@@ -3,7 +3,6 @@ _dummy_threading
 _importlib_modulespec
 _operator.methodcaller
 _posixsubprocess.cloexec_pipe
-_subprocess
 _types
 _weakref.CallableProxyType.__getattr__
 _weakref.ProxyType.__getattr__