no point in a checkbutton having a response

Change-Id: I2376336617d5ef324e03fa8a93137d3273dabc60
Reviewed-on: https://gerrit.libreoffice.org/50195Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Caolán McNamara <caolanm@redhat.com>
Tested-by: Caolán McNamara <caolanm@redhat.com>

formula/uiconfig/ui/formuladialog.ui

@@ -489,7 +489,6 @@
       </object>
     </child>
     <action-widgets>
-      <action-widget response="0">array</action-widget>
       <action-widget response="0">help</action-widget>
       <action-widget response="0">back</action-widget>
       <action-widget response="0">next</action-widget>