Remove unused event table macros from some wxGLCanvas files

No real changes, just don't define the event table unnecessarily.

include/wx/osx/glcanvas.h

@@ -131,7 +131,6 @@ protected:
     WXGLPixelFormat m_glFormat = nullptr;
     wxGLAttributes m_GLAttrs;
 
-    wxDECLARE_EVENT_TABLE();
     wxDECLARE_CLASS(wxGLCanvas);
 };
 

include/wx/qt/glcanvas.h

@@ -81,8 +81,6 @@ public:
     static bool ConvertWXAttrsToQtGL(const int *wxattrs, QGLFormat &format);
 
 private:
-
-//    wxDECLARE_EVENT_TABLE();
     wxDECLARE_CLASS(wxGLCanvas);
 };
 

src/osx/glcanvas_osx.cpp

@@ -410,9 +410,6 @@ wxGLContext::~wxGLContext()
 
 wxIMPLEMENT_CLASS(wxGLCanvas, wxWindow);
 
-wxBEGIN_EVENT_TABLE(wxGLCanvas, wxWindow)
-wxEND_EVENT_TABLE()
-
 wxGLCanvas::wxGLCanvas(wxWindow *parent,
                        const wxGLAttributes& dispAttrs,
                        wxWindowID id,