tests: test_510/issue_519: needs fixing / should be removed

[blueyed]

See #6813 for more details.

[symonk]

@RonnyPfannschmidt / @nicoddemus / @bluetech can we close this? looks like a PR was merged some time ago removing test_510

[RonnyPfannschmidt]

This does not look like it was merged from the downstream to the main repo, im on mobile and can't verify

[symonk]

keen eye, your right it was a fork :) sorry about that