Resolves: tdf#125761 there is no page called 'labelTP_BACKGROUND'

Change-Id: Ia6558039da010b0f6d8385e9791c0abc2ef75eba
Reviewed-on: https://gerrit.libreoffice.org/73665
Reviewed-by: Caolán McNamara <caolanm@redhat.com>
Tested-by: Caolán McNamara <caolanm@redhat.com>

sw/source/ui/chrdlg/pardlg.cxx

@@ -116,7 +116,6 @@ SwParaDlg::SwParaDlg(weld::Window *pParent,
     {
         RemoveTabPage("labelTP_NUMPARA");
         RemoveTabPage("labelTP_DROPCAPS");
-        RemoveTabPage("labelTP_BACKGROUND");
         RemoveTabPage("labelTP_BORDER");
         RemoveTabPage("area");
         RemoveTabPage("transparence");