purge unused code from OrbotMainActivity

mItemOnOff no longer exists, there is no more start/stop button on the menu
and this code was trying to update menu.getItem(0), which is currently the
settings button.

onSharedPreferenceChanged() was entirely empty, and the prefs are all
handled in their own Activity

src/org/torproject/android/OrbotMainActivity.java

@@ -28,7 +28,6 @@ import android.content.Intent;
 import android.content.IntentFilter;
 import android.content.SharedPreferences;
 import android.content.SharedPreferences.Editor;
-import android.content.SharedPreferences.OnSharedPreferenceChangeListener;
 import android.content.pm.PackageInfo;
 import android.content.pm.PackageManager;
 import android.content.pm.PackageManager.NameNotFoundException;
@@ -65,13 +64,13 @@ import com.google.zxing.integration.android.IntentIntegrator;
 import com.google.zxing.integration.android.IntentResult;
 
 
-public class OrbotMainActivity extends Activity implements OrbotConstants, OnLongClickListener, OnTouchListener, OnSharedPreferenceChangeListener
+public class OrbotMainActivity extends Activity
-{
+        implements OrbotConstants, OnLongClickListener, OnTouchListener {
+
     /* Useful UI bits */
     private TextView lblStatus = null; //the main text display widget
     private ImageProgressView imgStatus = null; //the main touchable image for activating Orbot
 
-    private MenuItem mItemOnOff = null;
     private TextView downloadText = null;
     private TextView uploadText = null;
     private TextView mTxtOrbotLog = null;
@@ -80,7 +79,6 @@ public class OrbotMainActivity extends Activity implements OrbotConstants, OnLon
     private ToggleButton mBtnVPN = null;
     private ToggleButton mBtnBridges = null;
 
-    
 	private DrawerLayout mDrawer;
 	private ActionBarDrawerToggle mDrawerToggle;
 	private Toolbar mToolbar;
@@ -100,7 +98,6 @@ public class OrbotMainActivity extends Activity implements OrbotConstants, OnLon
         super.onCreate(savedInstanceState);
 
         mPrefs = TorServiceUtils.getSharedPrefs(getApplicationContext());        
-        mPrefs.registerOnSharedPreferenceChangeListener(this);
         
     	doLayout();
 
@@ -116,8 +113,6 @@ public class OrbotMainActivity extends Activity implements OrbotConstants, OnLon
                 new IntentFilter(TorServiceConstants.LOCAL_ACTION_LOG));
 	}
 
-	
-
 	private void sendIntentToService(String action) {
 		Intent torService = new Intent(this, TorService.class);    
 		torService.setAction(action);
@@ -300,39 +295,9 @@ public class OrbotMainActivity extends Activity implements OrbotConstants, OnLon
         MenuInflater inflater = getMenuInflater();
         inflater.inflate(R.menu.orbot_main, menu);
 
-        mItemOnOff = menu.getItem(0);
-        
         return true;
     }
 
-    /**
-    private void appConflictChecker ()
-    {
-    	SharedPreferences sprefs = TorServiceUtils.getSharedPrefs(getApplicationContext());
-    	
-    	boolean showAppConflict = true;//sprefs.getBoolean("pref_show_conflict",true);
-    	
-    	String[] badApps = {"com.sec.msc.nts.android.proxy:com.sec.msc.nts.android.proxy","com.sec.pcw:Samsung Link"};
-    	
-    	for (String badApp : badApps)
-    	{
-    		String[] badAppParts = badApp.split(":");
-    		
-    		if (appInstalledOrNot(badAppParts[0]))
-    		{
-    			String msg = getString(R.string.please_disable_this_app_in_android_settings_apps_if_you_are_having_problems_with_orbot_) + badAppParts[1];
-    			
-    			if (showAppConflict)
-    				showAlert(getString(R.string.app_conflict),msg,true);
-	    	
-	    	//	appendLogTextAndScroll(msg);
-    		}
-    	}
-    	
-    	sprefs.edit().putBoolean("pref_show_conflict", false).commit();
-	
-    }*/
-    
     private void showAbout ()
         {
                 
@@ -1094,8 +1059,6 @@ public class OrbotMainActivity extends Activity implements OrbotConstants, OnLon
                     		
                             mBtnBrowser.setEnabled(true);
                             
-                            if (mItemOnOff != null)
-                                    mItemOnOff.setTitle(R.string.menu_stop);
                             
                             if (lblStatus != null && torServiceMsg != null)
                             	if (torServiceMsg.indexOf('%')!=-1)
@@ -1130,8 +1093,6 @@ public class OrbotMainActivity extends Activity implements OrbotConstants, OnLon
                         
                         imgStatus.setImageResource(R.drawable.torstarting);
                 
-                        if (mItemOnOff != null)
-                                mItemOnOff.setTitle(R.string.menu_stop);
                 	
                         if (lblStatus != null && torServiceMsg != null)
                         	if (torServiceMsg.indexOf('%')!=-1)
@@ -1146,8 +1107,6 @@ public class OrbotMainActivity extends Activity implements OrbotConstants, OnLon
                         lblStatus.setText(getString(R.string.press_to_start));
                         mBtnBrowser.setEnabled(false);
                         
-                        if (mItemOnOff != null)
-                                mItemOnOff.setTitle(R.string.menu_start);
 
                     }
                     
@@ -1219,7 +1178,6 @@ public class OrbotMainActivity extends Activity implements OrbotConstants, OnLon
                     break;
                 case TorServiceConstants.ENABLE_TOR_MSG:
                         
-                        
                         updateStatus((String)msg.getData().getString(HANDLER_TOR_MSG));
                         
                         break;
@@ -1300,13 +1258,6 @@ public class OrbotMainActivity extends Activity implements OrbotConstants, OnLon
             return numberFormat.format(Math
                     .round(((float) ((int) (count * 100 / 1024 / 1024)) / 100)))
                     + getString(R.string.mb);
-    }
-
-    @Override
-    public void onSharedPreferenceChanged(SharedPreferences sharedPreferences,
-            String key) {
-    
-        
     }
 
       private static final float ROTATE_FROM = 0.0f;