drop newly unused Application::ValidateSystemFont

Change-Id: Iffe850d99f2dcd9e955a4ba1190e010be905434b

include/vcl/svapp.hxx

@@ -724,18 +724,6 @@ public:
     */
     static const AllSettings&   GetSettings();
 
-    /** Validate that the currently selected system UI font is suitable
-     to display the application's UI.
-
-     A localized test string will be checked if it can be displayed in the currently
-     selected system UI font. If no glyphs are missing it can be assumed that the font
-     is proper for display of the application's UI.
-
-     @returns true if the system font is suitable for our UI and false if the test
-       string could not be displayed with the system font.
-    */
-    static bool                 ValidateSystemFont();
-
     /** Get the application's locale data wrapper.
 
      @returns reference to a LocaleDataWrapper object

vcl/source/app/svapp.cxx

@@ -497,21 +497,6 @@ void Application::MergeSystemSettings( AllSettings& rSettings )
     }
 }
 
-bool Application::ValidateSystemFont()
-{
-    vcl::Window* pWindow = ImplGetSVData()->maWinData.mpFirstFrame;
-    if( ! pWindow )
-        pWindow = ImplGetDefaultWindow();
-
-    if( pWindow )
-    {
-        AllSettings aSettings;
-        pWindow->ImplGetFrame()->UpdateSettings( aSettings );
-        return pWindow->ImplCheckUIFont( aSettings.GetStyleSettings().GetAppFont() );
-    }
-    return false;
-}
-
 void Application::SetSettings( const AllSettings& rSettings )
 {
     const SolarMutexGuard aGuard;