Remove compatibility aliases (#5464)

* Remove compatibility aliases

Remove a few instances of Text

Use aliases from _typeshed

* Remove unused imports

stdlib/locale.pyi

@@ -1,6 +1,4 @@
 import sys
-
-# workaround for mypy#2010
 from builtins import str as _str
 from decimal import Decimal
 from typing import Any, Callable, Dict, Iterable, List, Mapping, Optional, Sequence, Tuple, Union