Do not download custom groups, makes skyped to lag because those queries timeout

http://bugs.bitlbee.org/bitlbee/ticket/946

--- bitlbee-3.0.5/protocols/skype/skype.c~	2012-02-18 12:55:09.000000000 +0200
+++ bitlbee-3.0.5/protocols/skype/skype.c	2012-04-15 15:12:57.245107505 +0300
@@ -1170,8 +1170,7 @@
 	skype_printf(ic, "PASSWORD %s\n", ic->acc->pass);
 
 	/* This will download all buddies and groups. */
-	st = skype_printf(ic, "SEARCH GROUPS CUSTOM\n");
-	skype_printf(ic, "SEARCH FRIENDS\n");
+	st = skype_printf(ic, "SEARCH FRIENDS\n");
 
 	skype_printf(ic, "SET USERSTATUS ONLINE\n");