Fix Aux-Send names on copy/paste

Sends do not have any ports, so a unique name is not required.
Since 82541b33a4 custom aux names are kept when setting state.

Previously this "worked" because set_state() change the name
of the new aux-send to the name of the target-bus.

gtk2_ardour/processor_box.cc

@@ -3427,8 +3427,6 @@ ProcessorBox::paste_processor_state (const XMLNodeList& nlist, boost::shared_ptr
 				InternalSend* s = new InternalSend (*_session, sendpan, _route->mute_master(),
 						_route, boost::shared_ptr<Route>(), Delivery::Aux);
 
-				IOProcessor::prepare_for_reset (n, s->name());
-
 				if (s->set_state (n, Stateful::loading_state_version)) {
 					delete s;
 					return;