Backported from X.org:

commit 39ce5f1544029412f4060f3e89ce1d87222ef42b
Author: Adam Jackson <ajax@nwnk.net>
Date:   Fri Jan 6 17:05:26 2006 +0000

    Remove unused X11R4 DDX compatibility function miClipNotify.
Backported-to-NX-by: Mihai Moldovan <ionic@ionic.de>