I think it's unlikely that removing any of this will break other programs, because Lubuntu doesn't come with LibreOffice, and Lubuntu users are able to run just about any Ubuntu program, without having to install LibreOffice.
I think it's unlikely that removing any of this will break other programs, because Lubuntu doesn't come with LibreOffice, and Lubuntu users are able to run just about any Ubuntu program, without having to install LibreOffice.