Fix removing tools from wxToolBar in wxOSX.

Release the tool instead of retaining it (typo?) and also remove it from the
toolbar view.

See #16663.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@78320 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/osx/cocoa/toolbar.mm

@@ -114,7 +114,8 @@ public:
         {
             if ( !IsControl() )
             {
-                [m_controlHandle retain];
+                [m_controlHandle removeFromSuperview];
+                [m_controlHandle release];
             }
             else
             {