Re-organization of the OPIs

Remove the source of OPIs from this repository (moved to https://gitlab.esss.lu.se/hwcore/ts/mrfioc2-opis/), and use the new repository as a submodule. With this change the OPIs from this repository won't work on window machine, as it uses unix symbolic link. Removed also the lab OPIs as they shouldn't be part of the official deployment