Revert "Loosen Num-in-sink warning text message match test"
Revert "Loosen Num-in-sink warning text message match test"

This reverts commit 45468627033ef62abc4999268a6a6204fe0cf3f1.

The bug[^1] requiring this tweak has been fixed[^2];

[1] https://github.com/rakudo/rakudo/issues/1651
[2] https://github.com/MoarVM/MoarVM/commit/b735866ddee9bd719440e5c822045430b335f27b

perl6/roast,dogbert17/roast,dogbert17/roast