tests: Remove obsolete test of Card.Media separator
tests: Remove obsolete test of Card.Media separator

There is no separator any more, so the regression test is not needed.

https://phabricator.endlessm.com/T16238

endlessm/eos-knowledge-lib,endlessm/eos-knowledge-lib,endlessm/eos-knowledge-lib,endlessm/eos-knowledge-lib