Remove tests that expect overflow checks from native subs
Remove tests that expect overflow checks from native subs

The tests were added recently, as part of coverage work and they
test behaviour that is unwanted and has been removed[^1] from rakudo.

[1] https://github.com/rakudo/rakudo/commit/8ad885f0ab

zostay/roast,zostay/roast,dogbert17/roast,bitrauser/roast,bitrauser/roast,perl6/roast,zostay/roast,dogbert17/roast