dix: Remove LegalModifier()

This hasn't done anything besides return TRUE in a long long time.

Reviewed-by: Eric Anholt <eric@anholt.net>
Signed-off-by: Adam Jackson <ajax@redhat.com>
1 job for ddx-cleanup in 2 minutes (queued for 2 seconds)
Status Name Job ID Coverage
  Test
passed job #25910

00:02:00