revert own commit r54450, this works on X11 but not in Windows and caused bug [#34255] (which may be a bug in windows ghost?, not getting key release for modifiers).

Cross platform modifier keys on activating window better be handled at ghost level anyway.


git-svn-id: https://svn.blender.org/svnroot/bf-blender/trunk/blender@54581 954f8c5b-7b00-dc11-b283-0030488c597c