Help: Remove unused function

Leftover from 5cf29723.

Change-Id: Ia1e7debd3d5e2edeac41bae091d0057fa77a84bc
Reviewed-by: Tobias Hunger <tobias.hunger@qt.io>
Reviewed-by: Eike Ziller <eike.ziller@qt.io>

src/shared/help/bookmarkmanager.cpp

@@ -315,15 +315,6 @@ void BookmarkWidget::setOpenInNewPageActionVisible(bool visible)
     m_isOpenInNewPageActionVisible = visible;
 }
 
-void BookmarkWidget::removeClicked()
-{
-    const QModelIndex& index = treeView->currentIndex();
-    if (searchField->text().isEmpty()) {
-        bookmarkManager->removeBookmarkItem(treeView,
-            filterBookmarkModel->mapToSource(index));
-    }
-}
-
 void BookmarkWidget::filterChanged()
 {
     bool searchBookmarks = searchField->text().isEmpty();

src/shared/help/bookmarkmanager.h

@@ -114,7 +114,6 @@ signals:
     void createPage(const QUrl &url, bool fromSearch);
 
 private:
-    void removeClicked();
     void filterChanged();
     void expand(const QModelIndex& index);
     void activated(const QModelIndex &index);