Remove duplicated Maxforwards line in AMI output.

(Closes issue ASTERISK-18637)
Reported by: Jacek Konieczny
Patches:
     asterisk-sipshowpeer.patch (License #6298) uploaded by Jacek Konieczny

git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/1.8@339147 65c4cc65-6c06-0410-ace0-fbb531ad65f3

channels/chan_sip.c

@@ -17016,7 +17016,6 @@ static char *_sip_show_peer(int type, int fd, struct mansession *s, const struct
 		peer_mailboxes_to_str(&mailbox_str, peer);
 		astman_append(s, "VoiceMailbox: %s\r\n", mailbox_str->str);
 		astman_append(s, "TransferMode: %s\r\n", transfermode2str(peer->allowtransfer));
-		astman_append(s, "Maxforwards: %d\r\n", peer->maxforwards);
 		astman_append(s, "LastMsgsSent: %d\r\n", peer->lastmsgssent);
 		astman_append(s, "Maxforwards: %d\r\n", peer->maxforwards);
 		astman_append(s, "Call-limit: %d\r\n", peer->call_limit);