Remove some tests that aren't relevant anymore
Remove some tests that aren't relevant anymore

ErrActualLRPCannotBeEvacuated was an error that was returned by ETCD and is not
being returned from the SQLDB.

Signed-off-by: Edwin Xie <6bc24e9c160281972837d9e13287696d26612564@pivotal.io>

cloudfoundry-incubator/bbs,cloudfoundry-incubator/bbs