Removing assertion where everything is too late anyway.

src/VANetServerImpl.cpp

@@ -802,7 +802,9 @@ void CVANetServerImpl::RemoveClient( int iClientID, int iStatusCode )
 	VistaMutexLock oEventChannelLock( *m_pEventChannelLock );
 	VistaMutexLock oHandlerLock( *m_pEventHandlerLock );
 
-	assert( iClientID >= 0 && iClientID < ( int ) m_vecClients.size() );
+	if( m_vecClients.size() == 0 )
+		return; // Clients already gone ...
+
 	std::vector<CClientData>::iterator itClient = m_vecClients.begin() + iClientID;
 
 #ifdef VANET_SERVER_VERBOSE