CP - Limit pixel density fudge to Android only

src/QmlControls/ScreenTools.qml

@@ -58,18 +58,14 @@ Item {
         if(QGroundControl.corePlugin.options.devicePixelDensity != 0) {
             return QGroundControl.corePlugin.options.devicePixelDensity
         }
-        //-- Apple returns proper values
-        if(isiOS || isMac) {
-            return Screen.pixelDensity
-        }
-        //-- Mobile is rather unreliable
-        if(isMobile) {
+        //-- Android is rather unreliable
+        if(isAndroid) {
             // Lets assume it's unlikely you have a tablet over 300mm wide
             if((Screen.width / Screen.pixelDensity) > 300) {
                 return Screen.pixelDensity * 2
             }
         }
-        //-- Still needs logical pixel density on Windows
+        //-- Let's use what the system tells us
         return Screen.pixelDensity
     }