roachtest: re-skip two bank tests

[tbg]

• Revert "roachtest: re-enable acceptance/bank/zerosum-splits"
• Revert "roachtest: re-enable acceptance/bank/zerosum-restart"

They hit flakes: #53829

In particular, there seems to be a fatal on an untracked goroutine, which causes roachtest to terminate prematurely.

Release justification: testing
Release note: None

[cockroach-teamcity]

This change is 

[tbg]

This has since incurred two more failures on merge-to-master, so going ahead with a self-review on behalf of test infra team

bors r+

[craig]

Build failed:

• GitHub CI (Cockroach)

[tbg]

bors r+

Needed a release justification on the PR description as well

[knz]

I don't understand why you use a comment in the second line instead of a skip directive

[tbg]

I don't understand why you use a comment in the second line instead of a skip directive

I simply reverted the commits. I agree that a skip directive would have been better, this isn't worth another turnaround. I could imagine (have not checked) that this test has been skipped for longer than the skip directive existed.

[knz]

In fact you added the skip to the first one without adding it to the second one initially. 🤓

[craig]

Build succeeded:

• GitHub CI (Cockroach)