Having a category for each delegate is not required anymore.

This is thanks to XMPPMulticastDelegate.

src/XMPPConnection.m

@@ -1105,52 +1105,3 @@
 	return delegates;
 }
 @end
-
-@implementation OFObject (XMPPConnectionDelegate)
--  (void)connection: (XMPPConnection*)connection
-  didReceiveElement: (OFXMLElement*)element
-{
-}
-
-- (void)connection: (XMPPConnection*)connection
-    didSendElement: (OFXMLElement*)element
-{
-}
-
-- (void)connectionWasAuthenticated: (XMPPConnection*)connection
-{
-}
-
-- (void)connection: (XMPPConnection*)connection
-     wasBoundToJID: (XMPPJID*)JID
-{
-}
-
-- (BOOL)connection: (XMPPConnection*)connection
-      didReceiveIQ: (XMPPIQ*)iq
-{
-	return NO;
-}
-
--   (void)connection: (XMPPConnection*)connection
-  didReceivePresence: (XMPPPresence*)presence
-{
-}
-
--  (void)connection: (XMPPConnection*)connection
-  didReceiveMessage: (XMPPMessage*)message
-{
-}
-
-- (void)connectionWasClosed: (XMPPConnection*)connection
-{
-}
-
-- (void)connectionWillUpgradeToTLS: (XMPPConnection*)connection
-{
-}
-
-- (void)connectionDidUpgradeToTLS: (XMPPConnection*)connection
-{
-}
-@end