unused SfxConfigGroupListBox

Change-Id: Ia31f70b0d22b4bca13e46f3fbce440288bafd26f
Reviewed-on: https://gerrit.libreoffice.org/68700
Tested-by: Jenkins
Reviewed-by: Caolán McNamara <caolanm@redhat.com>
Tested-by: Caolán McNamara <caolanm@redhat.com>

cui/source/inc/acccfg.hxx

@@ -41,7 +41,6 @@
 #include "cfgutil.hxx"
 
 class SfxMacroInfoItem;
-class SfxConfigGroupListBox;
 class SfxConfigFunctionListBox;
 class SfxAcceleratorConfigPage;
 class SfxStringItem;