only refresh once on startup

src/main.cpp

@@ -640,8 +640,8 @@ void setup()
     Serial.println("Failed to communicate with SDS011 sensor, check wiring?");
   }
 
-  display.clearScreen();
-  display.refresh();
+  //display.clearScreen();
+  //display.refresh();
 
   ESP_LOGD(TAG, "displaying welcome screen");
   helloWorld();