remove the mempool lock now as we dont lock mempool inside now

src/net_processing.cpp

@@ -5913,8 +5913,7 @@ bool PeerManagerImpl::SendMessages(CNode* pto)
         }
 
         if (auto tx_relay = peer->GetTxRelay(); tx_relay != nullptr) {
-                // SYSCOIN avoid deadlock because mempool is used inside, should be locked outside of cs_tx_inventory, invalidateblock will lock mempool first and then cs_tx_inventory
-                LOCK2(m_mempool.cs, tx_relay->m_tx_inventory_mutex);
+                LOCK(tx_relay->m_tx_inventory_mutex);
                 // SYSCOIN Check whether periodic sends should happen
                 // Note: If this node is running in a Masternode mode, it makes no sense to delay outgoing txes
                 // because we never produce any txes ourselves i.e. no privacy is lost in this case.