Remove use of "size-request" signal for wxWindow sizing.

This signal has been removed from GTK3. Instead have wxPizza keep track of child
size, and use gtk_widget_set_size_request() for wxWindows in native containers.


git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@71465 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/gtk/window.h

@@ -382,11 +382,6 @@ protected:
     // just as it does.
     unsigned long GTKConnectWidget(const char *signal, wxGTKCallback callback);
 
-    // Return true from here if PostCreation() should connect to size_request
-    // signal: this is done by default but doesn't work for some native
-    // controls which override this function to return false
-    virtual bool GTKShouldConnectSizeRequest() const { return !IsTopLevel(); }
-
     void ConstrainSize();
 
 private: