remove unused function GetGdkVisual()

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@63091 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/gtk/app.h

@@ -64,10 +64,6 @@ public:
     // implementation only from now on
     // -------------------------------
 
-    // This returns the current visual: either that used by wxRootWindow
-    // or the XVisualInfo* for SGI.
-    GdkVisual      *GetGdkVisual();
-
     // check for pending events, without interference from our idle source
     bool EventsPending();
     bool DoIdle();

src/gtk/app.cpp

@@ -277,21 +277,6 @@ bool wxApp::OnInitGui()
     return true;
 }
 
-GdkVisual *wxApp::GetGdkVisual()
-{
-    GdkVisual *visual = NULL;
-
-    XVisualInfo *xvi = (XVisualInfo *)GetXVisualInfo();
-    if ( xvi )
-        visual = gdkx_visual_get( xvi->visualid );
-    else
-        visual = gdk_drawable_get_visual( wxGetRootWindow()->window );
-
-    wxASSERT( visual );
-
-    return visual;
-}
-
 // use unusual names for the parameters to avoid conflict with wxApp::arg[cv]
 bool wxApp::Initialize(int& argc_, wxChar **argv_)
 {