fix bug in IconChoiceDialog::dispose

after
    commit 12bb4bc9
    convert HyperLinkPageType to scoped enum

Change-Id: Icb1afcdea38f231bf9b7119eb4c1bedbf7494962
Reviewed-on: https://gerrit.libreoffice.org/46707Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Noel Grandin <noel.grandin@collabora.co.uk>

cui/source/dialogs/iconcdlg.cxx

@@ -224,16 +224,6 @@ void IconChoiceDialog::dispose()
     }
     maPageList.clear();
 
-    if (m_pIconCtrl)
-    {
-        // remove Userdata from Icons
-        for ( sal_Int32 i=0; i < m_pIconCtrl->GetEntryCount(); i++)
-        {
-            SvxIconChoiceCtrlEntry* pEntry = m_pIconCtrl->GetEntry( i );
-            delete static_cast<sal_uInt16*>(pEntry->GetUserData());
-        }
-    }
-
     delete pRanges;
     pRanges = nullptr;
     delete pOutSet;