Revert "Introduce RingtoneSelection for carrying ringtone preference information."

This reverts commit ff88e582.

Reason for revert: dead code

Bug: 301713440
Bug: 272282867
Bug: 323853450
Test: n/a
Change-Id: Ie112c3b7cd08f5576792460a282df05acc12f87a

core/api/test-current.txt

@@ -1975,39 +1975,6 @@ package android.media {
     method public android.media.PlaybackParams setAudioStretchMode(int);
   }
 
-  public final class RingtoneSelection {
-    method @NonNull public static android.media.RingtoneSelection fromUri(@Nullable android.net.Uri, int);
-    method public int getSoundSource();
-    method @Nullable public android.net.Uri getSoundUri();
-    method public int getVibrationSource();
-    method @Nullable public android.net.Uri getVibrationUri();
-    method public static boolean isRingtoneSelectionUri(@Nullable android.net.Uri);
-    method @NonNull public android.net.Uri toUri();
-    field public static final String DEFAULT_SELECTION_URI_STRING = "content://media/ringtone";
-    field public static final int FROM_URI_RINGTONE_SELECTION_ONLY = 3; // 0x3
-    field public static final int FROM_URI_RINGTONE_SELECTION_OR_SOUND = 1; // 0x1
-    field public static final int FROM_URI_RINGTONE_SELECTION_OR_VIBRATION = 2; // 0x2
-    field public static final int SOUND_SOURCE_DEFAULT = 0; // 0x0
-    field public static final int SOUND_SOURCE_OFF = 1; // 0x1
-    field public static final int SOUND_SOURCE_URI = 2; // 0x2
-    field public static final int VIBRATION_SOURCE_APPLICATION_PROVIDED = 3; // 0x3
-    field public static final int VIBRATION_SOURCE_AUDIO_CHANNEL = 10; // 0xa
-    field public static final int VIBRATION_SOURCE_DEFAULT = 0; // 0x0
-    field public static final int VIBRATION_SOURCE_HAPTIC_GENERATOR = 11; // 0xb
-    field public static final int VIBRATION_SOURCE_OFF = 1; // 0x1
-    field public static final int VIBRATION_SOURCE_URI = 2; // 0x2
-  }
-
-  public static final class RingtoneSelection.Builder {
-    ctor public RingtoneSelection.Builder();
-    ctor public RingtoneSelection.Builder(@NonNull android.media.RingtoneSelection);
-    method @NonNull public android.media.RingtoneSelection build();
-    method @NonNull public android.media.RingtoneSelection.Builder setSoundSource(int);
-    method @NonNull public android.media.RingtoneSelection.Builder setSoundSource(@NonNull android.net.Uri);
-    method @NonNull public android.media.RingtoneSelection.Builder setVibrationSource(int);
-    method @NonNull public android.media.RingtoneSelection.Builder setVibrationSource(@NonNull android.net.Uri);
-  }
-
   public static final class VolumeShaper.Configuration.Builder {
     method @NonNull public android.media.VolumeShaper.Configuration.Builder setOptionFlags(int);
   }