remove unused __version__ from mock.py (#17977)

This isn't included in `__all__` and could be a source of confusion.

diff --git a/Lib/unittest/mock.py b/Lib/unittest/mock.py
index cd5a2aeb6084d719bea4c961480f4a3256af09ca..5622917dc37439fc889faf162243ae1b5461c284 100644 (file)
--- a/Lib/unittest/mock.py
+++ b/Lib/unittest/mock.py
@@ -23,8 +23,6 @@ __all__ = (
 )
 
 
-__version__ = '1.0'
-
 import asyncio
 import contextlib
 import io