LibGUI: Remove barely used AbstractView::searching()

Userland/Libraries/LibGUI/AbstractView.cpp

@@ -682,7 +682,7 @@ void AbstractView::draw_item_text(Gfx::Painter& painter, const ModelIndex& index
     else
         text_color = index.data(ModelRole::ForegroundColor).to_color(palette().color(foreground_role()));
     if (is_highlighting_searching(index)) {
-        Utf8View searching_text(searching());
+        Utf8View searching_text(m_searching);
         auto searching_length = searching_text.length();
         if (searching_length > search_highlighting_offset)
             searching_length -= search_highlighting_offset;

Userland/Libraries/LibGUI/AbstractView.h

@@ -163,7 +163,6 @@ protected:
     void update_edit_widget_position();
 
     bool is_searching() const { return !m_searching.is_null(); }
-    StringView searching() const { return m_searching; }
     void cancel_searching();
     void start_searching_timer();
     void do_search(String&&);