moving embedding to common API

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@56218 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/osx/cocoa/statbox.mm

@@ -44,11 +44,8 @@ wxWidgetImplType* wxWidgetImpl::CreateGroupBox( wxWindowMac* wxpeer,
                                     long style, 
                                     long extraStyle)
 {
-    NSView* sv = (wxpeer->GetParent()->GetHandle() );
-    
     NSRect r = wxOSXGetFrameForControl( wxpeer, pos , size ) ;
     wxNSBox* v = [[wxNSBox alloc] initWithFrame:r];
-    [sv addSubview:v];
     wxWidgetCocoaImpl* c = new wxWidgetCocoaImpl( wxpeer, v );
     [v setImplementation:c];
     return c;