Let dz handle client removal timers

Remove all clients inside a dz, not just those assigned to instance

zone/worldserver.cpp

@@ -2917,6 +2917,7 @@ void WorldServer::HandleMessage(uint16 opcode, const EQ::Net::Packet &p)
 		break;
 	}
 	case ServerOP_DzCharacterChange:
+	case ServerOP_DzRemoveAllCharacters:
 	{
 		DynamicZone::HandleWorldMessage(pack);
 		break;