Remove unused test code

src/QtLocationPlugin/QGCMapEngine.cpp

@@ -222,15 +222,6 @@ QGCMapEngine::cacheTile(QString type, const QString& hash, const QByteArray& ima
 QString
 QGCMapEngine::getTileHash(QString type, int x, int y, int z)
 {
-#if 0
-    int maxCachedZoom = 15;
-    if (z > maxCachedZoom) {
-        double unZoomFactor = qPow(2, z - maxCachedZoom);
-        x = (double)x / unZoomFactor;
-        y = (double)y / unZoomFactor;
-        z = maxCachedZoom;
-    }
-#endif
     return QString::asprintf("%010d%08d%08d%03d", getQGCMapEngine()->urlFactory()->getIdFromType(type), x, y, z);
 }