Remove _window from default imports

Author: yunline

src_py/__init__.py

@@ -340,11 +340,6 @@ def Overlay(format, size):  # pylint: disable=unused-argument
 except (ImportError, OSError):
     pass
 
-try:
-    import pygame._window
-except (ImportError, OSError):
-    system = MissingModule("_window", urgent=1)
-
 
 def packager_imports():
     """some additional imports that py2app/py2exe will want to see"""