There does not seem to be any need for that atom thing as we are
perfectly happy using plain OUStrings in the same struct, not to mention
that font names are supposed to be unique so I don’t see what we are
saving here.

As this was the only use for unotools/atom, it goes with it.

Change-Id: If9d58d84fff0403f9b2c41fe594b99028b30c2f4
Reviewed-on: https://gerrit.libreoffice.org/31520Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Khaled Hosny <khaledhosny@eglug.org>