effectively un-do r1.111, it fucks machines with bad clocks royally.

spotted the hard way by theo on armish, pinned to this changed by me.
no cookie for ckuethe for not testing on machines with bad clocks.

src/usr.sbin/ntpd/ntp.c

@@ -1,4 +1,4 @@
-/*	$OpenBSD: ntp.c,v 1.113 2009/06/06 18:47:19 ckuethe Exp $ */
+/*	$OpenBSD: ntp.c,v 1.114 2009/06/11 17:36:53 henning Exp $ */
 
 /*
  * Copyright (c) 2003, 2004 Henning Brauer <henning@openbsd.org>
@@ -532,11 +532,6 @@ priv_adjfreq(double offset)
 		return;
 	}
 
-	if (conf->filters & FILTER_ADJFREQ){
-		conf->filters &= ~FILTER_ADJFREQ;
-		return;
-	}
-
 	conf->freq.samples++;
 
 	if (conf->freq.samples <= 0)