Restore patch to drop phantom 86 key from en-us keymap (bz #1658676)
    
    The exact bug this was initially added to workaround was fixed
    in 2.12, so @crobinso dropped the patch. However, the phantom
    key turns out to still cause problems in another case, so until
    that is fixed, we need to put this back. See
    https://bugzilla.redhat.com/show_bug.cgi?id=1658676 for full
    details on the outstanding bug.