Remove unused DownloadDialog.onDismissListener

app/src/main/java/org/schabi/newpipe/download/DownloadDialog.java

@@ -7,8 +7,6 @@ import static org.schabi.newpipe.util.Localization.assureCorrectAppLanguage;
 import android.app.Activity;
 import android.content.ComponentName;
 import android.content.Context;
-import android.content.DialogInterface;
-import android.content.DialogInterface.OnDismissListener;
 import android.content.Intent;
 import android.content.ServiceConnection;
 import android.content.SharedPreferences;
@@ -113,9 +111,6 @@ public class DownloadDialog extends DialogFragment
     @State
     int selectedSubtitleIndex = 0; // default to the first item
 
-    @Nullable
-    private OnDismissListener onDismissListener = null;
-
     private StoredDirectoryHelper mainStorageAudio = null;
     private StoredDirectoryHelper mainStorageVideo = null;
     private DownloadManager downloadManager = null;
@@ -195,13 +190,6 @@ public class DownloadDialog extends DialogFragment
         this.selectedVideoIndex = ListHelper.getDefaultResolutionIndex(context, videoStreams);
     }
 
-    /**
-     * @param onDismissListener the listener to call in {@link #onDismiss(DialogInterface)}
-     */
-    public void setOnDismissListener(@Nullable final OnDismissListener onDismissListener) {
-        this.onDismissListener = onDismissListener;
-    }
-
 
     /*//////////////////////////////////////////////////////////////////////////
     // Android lifecycle
@@ -364,14 +352,6 @@ public class DownloadDialog extends DialogFragment
         });
     }
 
-    @Override
-    public void onDismiss(@NonNull final DialogInterface dialog) {
-        super.onDismiss(dialog);
-        if (onDismissListener != null) {
-            onDismissListener.onDismiss(dialog);
-        }
-    }
-
     @Override
     public void onDestroy() {
         super.onDestroy();