Remove ugly flicker during resizing

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@60998 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/generic/headerctrlg.cpp

@@ -344,7 +344,8 @@ void wxHeaderCtrl::StartOrContinueResizing(unsigned int col, int xPhysical)
         }
         //else: we had already done the above when we started
 
-        UpdateResizingMarker(xPhysical);
+        // This results in ugly flicker
+        // UpdateResizingMarker(xPhysical);
     }
 }