Don't delete initid scheduled item twice... Thanks, vecher, for bugging me about this.

git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@36182 65c4cc65-6c06-0410-ace0-fbb531ad65f3

channels/chan_sip.c

@@ -2819,8 +2819,6 @@ static void __sip_destroy(struct sip_pvt *p, int lockowner)
 		ast_log(LOG_WARNING, "Trying to destroy \"%s\", not found in dialog list?!?! \n", p->callid);
 		return;
 	} 
-	if (p->initid > -1)
-		ast_sched_del(sched, p->initid);
 	/* remove all current packets in this dialog */
 	while((cp = p->packets)) {