Code cleanup: remove unused interface

MyTracks/src/com/google/android/apps/mytracks/io/file/SaveAsyncTask.java

@@ -19,7 +19,6 @@ package com.google.android.apps.mytracks.io.file;
 import com.google.android.apps.mytracks.content.MyTracksProviderUtils;
 import com.google.android.apps.mytracks.content.Track;
 import com.google.android.apps.mytracks.content.TracksColumns;
-import com.google.android.apps.mytracks.io.file.TrackExporter.TrackExporterListener;
 import com.google.android.apps.mytracks.util.FileUtils;
 import com.google.android.apps.mytracks.util.PreferencesUtils;
 import com.google.android.apps.mytracks.util.SystemUtils;

MyTracks/src/com/google/android/apps/mytracks/io/file/TrackExporter.java

@@ -25,23 +25,6 @@ import java.io.OutputStream;
  */
 public interface TrackExporter {
 
-  /**
-   * Listener for {@link TrackExporter} progress.
-   * 
-   * @author Jimmy Shih
-   */
-  interface TrackExporterListener {
-
-    /**
-     * Called to update progress.
-     * 
-     * @param number the number of locations written
-     * @param max the maximum number of locations in a track, for calculation of
-     *          completion percentage
-     */
-    void onProgressUpdate(int number, int max);
-  }
-
   /**
    * Write track to an output stream
    * 

MyTracksTest/src/com/google/android/apps/mytracks/io/file/FileTrackExporterTest.java

@@ -7,7 +7,6 @@ import com.google.android.apps.mytracks.content.MyTracksProviderUtils;
 import com.google.android.apps.mytracks.content.MyTracksProviderUtils.Factory;
 import com.google.android.apps.mytracks.content.Track;
 import com.google.android.apps.mytracks.content.Waypoint;
-import com.google.android.apps.mytracks.io.file.TrackExporter.TrackExporterListener;
 import com.google.android.apps.mytracks.services.TrackRecordingServiceTest.MockContext;
 import com.google.android.apps.mytracks.testing.TestingProviderUtilsFactory;