Revert "s4-drs: do not try to contact for replication servers that are not anymore...

Revert "s4-drs: do not try to contact for replication servers that are not anymore in reps*"

This reverts commit 5bfd6251eb22ff701184a95649822a73cf4d157b.

This change has been causing regular segfaults in the build farm since
it was applied. I also think it may be unnecessary as
dreplsrv_refresh_partitions() should already be achieving the same
thing (removing stale replication targets).

I think the segfaults were caused by freeing an in-flight DSA, but I
have been unable to reproduce it outside of the build farm

Autobuild-User: Andrew Tridgell <tridge@samba.org>
Autobuild-Date: Wed Feb  1 07:49:42 CET 2012 on sn-devel-104