[PATCH] Remove --enable-obsolete-rpc configure flag

[Szabolcs Nagy]

* Petr Vorel <pvorel@suse.cz> [2020-07-11 20:15:08 +0200]:
> > Built with build-many-glibcs.py, with no new failures (i686-gnu is
> > currently broken and in the process of being fixed).
> Thanks a lot for additional testing. Looks like my fixing of missing /etc/rpc
> is not needed any more (I haven't tested the build but I guess you'd notice).

build-many-glibcs does not run execution tests and
non-empty /etc is needed for the container tests.
i dont know if that issue is fixed.