Don't use PostUserEvent to show message box in Customize dialog

Otherwise, it causes (I think) some clean-up issues, and causes
the menu bar not to be refreshed on delete of a custom menu after
trying to add an already existing command to the custom menu,
and getting the warning message box. And clicking the non-existent
menu causes the whole application to crash because of the dangling
reference, I think. The exact error message on crash was an "out of
range" error of a vector."

And we don't need the D&D stuff any more. (At least for now.)

Change-Id: I74b8b414e28349065b7408e21e07245fc40f2c75
Reviewed-on: https://gerrit.libreoffice.org/41930
Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Katarina Behrens <Katarina.Behrens@cib.de>

0 files changed, 0 insertions, 0 deletions