Remove redundant loop, tdf#96099 follow-up

Change-Id: I6318a526c8ea73ef32c18038c9bb5feeffc07b52
Reviewed-on: https://gerrit.libreoffice.org/59583
Tested-by: Jenkins
Reviewed-by: Noel Grandin <noel.grandin@collabora.co.uk>

sw/source/ui/index/cnttab.cxx

@@ -2811,8 +2811,6 @@ void SwTokenWindow::SetForm(SwForm& rForm, sal_uInt16 nL)
 
     if(m_pForm)
     {
-        for (auto& aControl : m_aControlList)
-            aControl.disposeAndClear();
         //apply current level settings to the form
         for (auto& aControl : m_aControlList)
             aControl.disposeAndClear();