Remove networking operations from presentation layer (#1033)

* Remove networking operations from presentation layer

src/graphics/Screen.cpp

@@ -619,11 +619,6 @@ static void drawNodeInfo(OLEDDisplay *display, OLEDDisplayUiState *state, int16_
             n = nodeDB.getNodeByIndex(nodeIndex);
         }
         displayedNodeNum = n->num;
-
-        // We just changed to a new node screen, ask that node for updated state if it's older than 2 minutes
-        if (sinceLastSeen(n) > 120) {
-            service.sendNetworkPing(displayedNodeNum, true);
-        }
     }
 
     NodeInfo *node = nodeDB.getNodeByIndex(nodeIndex);