fanotify: remove dead code in prepare_for_access_response

Remove the unnecessary check for the bypass_perm flag in
prepare_for_access_response(), since this function can't be called after
fanotify_release() is called we know the flag cannot ever be set.

Signed-off-by: Lino Sanfilippo <LinoSanfilippo@gmx.de>
Signed-off-by: Eric Paris <eparis@redhat.com>