Code improvements

Removed - partial - stupid code.

app/src/main/java/org/schabi/newpipe/fragments/list/BaseListFragment.java

@@ -79,11 +79,6 @@ public abstract class BaseListFragment<I, N> extends BaseStateFragment<I>
         }
     }
 
-    @Override
-    public void onDetach() {
-        super.onDetach();
-    }
-
     @Override
     public void onCreate(final Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);

app/src/main/java/org/schabi/newpipe/fragments/list/channel/ChannelFragment.java

@@ -183,13 +183,6 @@ public class ChannelFragment extends BaseListInfoFragment<ChannelInfo>
         }
     }
 
-    private void openRssFeed() {
-        final ChannelInfo info = currentInfo;
-        if (info != null) {
-            ShareUtils.openUrlInBrowser(requireContext(), info.getFeedUrl(), false);
-        }
-    }
-
     @Override
     public boolean onOptionsItemSelected(final MenuItem item) {
         switch (item.getItemId()) {
@@ -197,7 +190,10 @@ public class ChannelFragment extends BaseListInfoFragment<ChannelInfo>
                 NavigationHelper.openSettings(requireContext());
                 break;
             case R.id.menu_item_rss:
-                openRssFeed();
+                if (currentInfo != null) {
+                    ShareUtils.openUrlInBrowser(
+                            requireContext(), currentInfo.getFeedUrl(), false);
+                }
                 break;
             case R.id.menu_item_openInBrowser:
                 if (currentInfo != null) {
@@ -516,12 +512,11 @@ public class ChannelFragment extends BaseListInfoFragment<ChannelInfo>
     }
 
     private PlayQueue getPlayQueue(final int index) {
-        final List<StreamInfoItem> streamItems = new ArrayList<>();
-        for (final InfoItem i : infoListAdapter.getItemsList()) {
-            if (i instanceof StreamInfoItem) {
-                streamItems.add((StreamInfoItem) i);
-            }
-        }
+        final List<StreamInfoItem> streamItems = infoListAdapter.getItemsList().stream()
+                .filter(StreamInfoItem.class::isInstance)
+                .map(StreamInfoItem.class::cast)
+                .collect(Collectors.toList());
+
         return new ChannelPlayQueue(currentInfo.getServiceId(), currentInfo.getUrl(),
                 currentInfo.getNextPage(), streamItems, index);
     }

app/src/main/java/org/schabi/newpipe/fragments/list/playlist/PlaylistFragment.java

@@ -413,7 +413,7 @@ public class PlaylistFragment extends BaseListInfoFragment<PlaylistInfo> {
     }
 
     private Subscriber<List<PlaylistRemoteEntity>> getPlaylistBookmarkSubscriber() {
-        return new Subscriber<List<PlaylistRemoteEntity>>() {
+        return new Subscriber<>() {
             @Override
             public void onSubscribe(final Subscription s) {
                 if (bookmarkReactor != null) {

app/src/main/java/org/schabi/newpipe/fragments/list/videos/RelatedItemsFragment.java

@@ -26,12 +26,11 @@ import org.schabi.newpipe.util.RelatedItemInfo;
 import java.io.Serializable;
 
 import io.reactivex.rxjava3.core.Single;
-import io.reactivex.rxjava3.disposables.CompositeDisposable;
 
 public class RelatedItemsFragment extends BaseListInfoFragment<RelatedItemInfo>
         implements SharedPreferences.OnSharedPreferenceChangeListener {
     private static final String INFO_KEY = "related_info_key";
-    private final CompositeDisposable disposables = new CompositeDisposable();
+
     private RelatedItemInfo relatedItemInfo;
 
     /*//////////////////////////////////////////////////////////////////////////
@@ -54,11 +53,6 @@ public class RelatedItemsFragment extends BaseListInfoFragment<RelatedItemInfo>
     // LifeCycle
     //////////////////////////////////////////////////////////////////////////*/
 
-    @Override
-    public void onAttach(@NonNull final Context context) {
-        super.onAttach(context);
-    }
-
     @Override
     public View onCreateView(@NonNull final LayoutInflater inflater,
                              @Nullable final ViewGroup container,
@@ -67,9 +61,6 @@ public class RelatedItemsFragment extends BaseListInfoFragment<RelatedItemInfo>
     }
 
     @Override
-    public void onDestroy() {
-        super.onDestroy();
-        disposables.clear();
     }
 
     @Override
@@ -128,7 +119,6 @@ public class RelatedItemsFragment extends BaseListInfoFragment<RelatedItemInfo>
         }
         ViewUtils.slideUp(requireView(), 120, 96, 0.06f);
 
-        disposables.clear();
     }
 
     /*//////////////////////////////////////////////////////////////////////////
@@ -137,11 +127,13 @@ public class RelatedItemsFragment extends BaseListInfoFragment<RelatedItemInfo>
 
     @Override
     public void setTitle(final String title) {
+        // Nothing to do - override parent
     }
 
     @Override
     public void onCreateOptionsMenu(@NonNull final Menu menu,
                                     @NonNull final MenuInflater inflater) {
+        // Nothing to do - override parent
     }
 
     private void setInitialData(final StreamInfo info) {