commit 05a244adc1ceb296a5babf4e14b16a20232891ee
Author: Leszek Koltunski <leszek@koltunski.pl>
Date:   Mon Oct 4 15:23:56 2021 +0200

    Simplifications

diff --git a/src/main/java/org/distorted/tutorials/TutorialActivity.java b/src/main/java/org/distorted/tutorials/TutorialActivity.java
index 84033f94..557ab84a 100644
--- a/src/main/java/org/distorted/tutorials/TutorialActivity.java
+++ b/src/main/java/org/distorted/tutorials/TutorialActivity.java
@@ -206,7 +206,6 @@ public class TutorialActivity extends TwistyActivity
       BlockController.onResume();
       TutorialSurfaceView view = findViewById(R.id.tutorialSurfaceView);
       view.onResume();
-      restorePreferences();
 
       if( mWebView!=null ) mWebView.onResume();
 
@@ -226,15 +225,6 @@ public class TutorialActivity extends TwistyActivity
       DistortedLibrary.onDestroy(1);
       }
 
-///////////////////////////////////////////////////////////////////////////////////////////////////
-
-    private void restorePreferences()
-      {
-      SharedPreferences preferences = PreferenceManager.getDefaultSharedPreferences(this);
-      TutorialSurfaceView view = findViewById(R.id.tutorialSurfaceView);
-      view.getPreRender().restorePreferences(preferences);
-      }
-
 ///////////////////////////////////////////////////////////////////////////////////////////////////
 
     void OpenGLError()