Settings: Refactor for new API and remove some unused references / imports

Signed-off-by: San Mehat <san@google.com>

src/com/android/settings/SoundSettings.java

@@ -25,7 +25,6 @@ import android.content.Intent;
 import android.content.IntentFilter;
 import android.media.AudioManager;
 import android.os.Bundle;
-import android.os.IMountService;
 import android.os.RemoteException;
 import android.os.ServiceManager;
 import android.preference.CheckBoxPreference;
@@ -59,8 +58,6 @@ public class SoundSettings extends PreferenceActivity implements
 
     private CheckBoxPreference mSilent;
 
-    private IMountService mMountService = null;
-
     /*
      * If we are currently in one of the silent modes (the ringer mode is set to either
      * "silent mode" or "vibrate mode"), then toggling the "Phone vibrate"
@@ -95,8 +92,6 @@ public class SoundSettings extends PreferenceActivity implements
 
         mAudioManager = (AudioManager) getSystemService(Context.AUDIO_SERVICE);
 
-        mMountService = IMountService.Stub.asInterface(ServiceManager.getService("mount"));
-
         addPreferencesFromResource(R.xml.sound_settings);
 
         if (TelephonyManager.PHONE_TYPE_CDMA != activePhoneType) {