Don't override DoGetBestSize() in wxGenericStaticText, it's unnecessary.

The base class already does exactly the same thing -- except that it also
accounts for the borders properly.

Also fix access for a couple of DoXXX() member functions which should be
protected and an event handler which can be private.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@62821 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/generic/stattextg.cpp

@@ -82,14 +82,6 @@ wxSize wxGenericStaticText::DoGetBestClientSize() const
     return wxSize(width, height);
 }
 
-wxSize wxGenericStaticText::DoGetBestSize() const
-{
-    wxSize ret = DoGetBestClientSize();
-    CacheBestSize(ret);
-    return ret;
-}
-
-
 void wxGenericStaticText::SetLabel(const wxString& label)
 {
     wxControl::SetLabel(label);