Cleanup: Remove deprecated text and metadata output interfaces

PiperOrigin-RevId: 255380951

library/core/src/main/java/com/google/android/exoplayer2/metadata/MetadataRenderer.java

@@ -34,12 +34,6 @@ import java.util.Arrays;
  */
 public final class MetadataRenderer extends BaseRenderer implements Callback {
 
-  /**
-   * @deprecated Use {@link MetadataOutput}.
-   */
-  @Deprecated
-  public interface Output extends MetadataOutput {}
-
   private static final int MSG_INVOKE_RENDERER = 0;
   // TODO: Holding multiple pending metadata objects is temporary mitigation against
   // https://github.com/google/ExoPlayer/issues/1874. It should be removed once this issue has been

library/core/src/main/java/com/google/android/exoplayer2/text/TextRenderer.java

@@ -44,12 +44,6 @@ import java.util.List;
  */
 public final class TextRenderer extends BaseRenderer implements Callback {
 
-  /**
-   * @deprecated Use {@link TextOutput}.
-   */
-  @Deprecated
-  public interface Output extends TextOutput {}
-
   @Documented
   @Retention(RetentionPolicy.SOURCE)
   @IntDef({