The duplicate test being removed has not much value given that
go-version->git-ref is a no-op for version strings not matching the
%go-pseudo-version-rx regexp; that case is already tested by the test above.
* tests/go.scm ("go-version omited 'v' character"): Remove test.
Reported-by: Tobias Geerinckx-Rice <me@tobias.gr>