Revert "Skip mouse button release events in wxGenericListCtrl."

This reverts r76825 as it is not necessary any longer, the fix in the previous
commit takes care of this problem more generally.

See #16365.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/branches/WX_3_0_BRANCH@77897 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/generic/listctrl.cpp

@@ -2437,9 +2437,6 @@ void wxListMainWindow::OnMouse( wxMouseEvent &event )
         {
             // reset the selection and bail out
             HighlightAll(false);
-
-            if ( event.LeftUp() )
-                event.Skip();
         }
 
         return;
@@ -2515,8 +2512,6 @@ void wxListMainWindow::OnMouse( wxMouseEvent &event )
         }
 
         m_lineSelectSingleOnUp = (size_t)-1;
-
-        event.Skip();
     }
     else
     {