drt: remove the modified in flexdr_maze

Signed-off-by: osamahammad21 <[email protected]>

Author: osamahammad21

src/drt/src/dr/FlexDR_maze.cpp

@@ -1906,9 +1906,6 @@ void FlexDRWorker::route_queue_main(std::queue<RouteQueueEntry>& rerouteQueue)
       }
       // init
       net->setModified(true);
-      if (net->getFrNet()) {
-        net->getFrNet()->setModified(true);
-      }
       net->setNumMarkers(0);
       if (graphics_) {
         graphics_->startNet(net);