pcsx2|utilities: Remove Windows wx2.8 code

It's not used anymore.

pcsx2/gui/AppMain.cpp

@@ -339,9 +339,6 @@ class pxMessageOutputMessageBox : public wxMessageOutput
 public:
 	pxMessageOutputMessageBox() { }
 
-#if wxMAJOR_VERSION < 3
-	virtual void Printf(const wxChar* format, ...);
-#endif
 	// DoPrintf in wxMessageOutputBase (wxWidgets 3.0) uses this.
 	virtual void Output(const wxString &out);
 };
@@ -353,19 +350,6 @@ public:
 // commandline window using an identifier we know is contained in it, and then format our own window
 // display. :D  --air
 
-#if wxMAJOR_VERSION < 3
-void pxMessageOutputMessageBox::Printf(const wxChar* format, ...)
-{
-	va_list args;
-	va_start(args, format);
-	wxString out;
-	out.PrintfV(format, args);
-	va_end(args);
-
-	Output(out);
-}
-#endif
-
 void pxMessageOutputMessageBox::Output(const wxString& out)
 {
 	using namespace pxSizerFlags;

pcsx2/gui/Panels/BiosSelectorPanel.cpp

@@ -54,11 +54,7 @@ Panels::BaseSelectorPanel::~BaseSelectorPanel() throw()
 void Panels::BaseSelectorPanel::OnShow(wxShowEvent& evt)
 {
 	evt.Skip();
-#if defined (_MSC_VER) && (wxMAJOR_VERSION < 3)
-	if( !evt.GetShow() ) return;
-#else
-	if( !evt.IsShown() ) return;
-#endif
+	if( evt.IsShown() )
 		OnShown();
 }