Remove an old unneeded test case in RA. (#4197)
Remove an old unneeded test case in RA. (#4197)

We introduced a test case called "TestUpdateAuthorizationNewRPC" when we
added the "PerformValidation" RPC at the SA. It mostly duplicated the
TestUpdateAuthorization test case that already existed. They evolved
alongside over the years, but we should have cleaned up the "NewRPC"
variant and removed the old one it was copied from a long time ago.
bmw/boulder,bmw/boulder,jsha/boulder,letsencrypt/boulder,letsencrypt/boulder,jcjones/boulder,letsencrypt/boulder,jcjones/boulder,jsha/boulder,jcjones/boulder,jcjones/boulder,bmw/boulder,jsha/boulder