pythongh-120417: Remove unused imports in the stdlib

Author: vstinner

Lib/dataclasses.py

@@ -7,7 +7,6 @@
 import itertools
 import abc
 from reprlib import recursive_repr
-from types import FunctionType, GenericAlias
 
 
 __all__ = ['dataclass',
@@ -333,7 +332,7 @@ def __set_name__(self, owner, name):
             # it.
             func(self.default, owner, name)
 
-    __class_getitem__ = classmethod(GenericAlias)
+    __class_getitem__ = classmethod(types.GenericAlias)
 
 
 class _DataclassParams:

Lib/ntpath.py

@@ -19,7 +19,6 @@
 
 import os
 import sys
-import stat
 import genericpath
 from genericpath import *
 

Lib/pydoc.py

@@ -75,7 +75,7 @@ class or function within a module or module in a package.  If the
 from reprlib import Repr
 from traceback import format_exception_only
 
-from _pyrepl.pager import (get_pager, plain, escape_less, pipe_pager,
+from _pyrepl.pager import (get_pager, plain, pipe_pager,
                            plain_pager, tempfile_pager, tty_pager)
 
 

Lib/stat.py

@@ -2,7 +2,6 @@
 
 Suggested usage: from stat import *
 """
-import sys
 
 # Indices for stat struct members in the tuple returned by os.stat()