[v6.d REVIEW] Move error text test out of roast
[v6.d REVIEW] Move error text test out of roast

Moved to: https://github.com/rakudo/rakudo/commit/9dce633188
Orig: https://github.com/perl6/roast/commit/35fac4d1b

perl6/roast,dogbert17/roast,dogbert17/roast