convert delete hatch querybox to .ui

Change-Id: If550ac8ad58ea7ff05650692d1a506c5088d05e2
Reviewed-on: https://gerrit.libreoffice.org/6708
Reviewed-by: Caolán McNamara <caolanm@redhat.com>
Tested-by: Caolán McNamara <caolanm@redhat.com>