Fix a few warnings.

-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=123302488

library/src/main/java/com/google/android/exoplayer/SimpleExoPlayer.java

@@ -149,7 +149,7 @@ public final class SimpleExoPlayer implements ExoPlayer {
   /**
    * Returns the track type that the renderer at a given index handles.
    *
-   * @see {@link TrackRenderer#getTrackType()}.
+   * @see TrackRenderer#getTrackType()
    * @param index The index of the renderer.
    * @return One of the TRACK_TYPE_* constants defined in {@link C}.
    */
@@ -271,10 +271,12 @@ public final class SimpleExoPlayer implements ExoPlayer {
 
   // ExoPlayer implementation
 
+  @Override
   public void addListener(EventListener listener) {
     player.addListener(listener);
   }
 
+  @Override
   public void removeListener(EventListener listener) {
     player.removeListener(listener);
   }

library/src/main/java/com/google/android/exoplayer/drm/DrmInitData.java

@@ -222,6 +222,7 @@ public final class DrmInitData implements Comparator<SchemeData>, Parcelable {
       dest.writeByteArray(data);
     }
 
+    @SuppressWarnings("hiding")
     public static final Parcelable.Creator<SchemeData> CREATOR =
         new Parcelable.Creator<SchemeData>() {
 

library/src/main/java/com/google/android/exoplayer/extractor/ogg/VorbisReader.java

@@ -97,8 +97,7 @@ import java.util.ArrayList;
   }
 
   //@VisibleForTesting
-  /* package */ VorbisSetup readSetupHeaders(ParsableByteArray scratch)
-      throws IOException, InterruptedException {
+  /* package */ VorbisSetup readSetupHeaders(ParsableByteArray scratch) throws IOException {
 
     if (vorbisIdHeader == null) {
       vorbisIdHeader = VorbisUtil.readVorbisIdentificationHeader(scratch);