removed duplicate wxTheApp and m_appInitFn definitions from all ports, not just MSW

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@21343 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/mgl/app.cpp

@@ -38,13 +38,9 @@
 #include "wx/mgl/private.h"
 
 //-----------------------------------------------------------------------------
-// Global data
+// wxApp::Exit()
 //-----------------------------------------------------------------------------
 
-wxApp *wxTheApp = NULL;
-wxAppInitializerFunction wxAppBase::m_appInitFn = (wxAppInitializerFunction) NULL;
-
-
 void wxApp::Exit()
 {
     MGL_exit();