fix compilation after recent wxTextCtrl changes

notice that it has become unfortunately impossible (or at least much more
difficult) to maintain compilation when wxRICHTEXT_DERIVES_FROM_TEXTCTRLBASE
is unset so I simply removed it as the code wouldn't compile anyhow


git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@41755 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/richtext/richtextbuffer.cpp

@@ -5054,7 +5054,7 @@ void wxRichTextAction::UpdateAppearance(long caretPosition, bool sendUpdateEvent
             m_ctrl->Refresh(false);
 
             if (sendUpdateEvent)
-                m_ctrl->SendUpdateEvent();
+                m_ctrl->SendTextUpdatedEvent();
         }
     }
 }