Revert fix for #34822

Allowing any-key modifiers to work is cool, but this needs more work.
My previous fix made overlapping key presses (where you release key 1
just after pressing key 2) to not register as valid shortcuts.




git-svn-id: https://svn.blender.org/svnroot/bf-blender/trunk/blender@56473 954f8c5b-7b00-dc11-b283-0030488c597c