closes https://github.com/ppy/osu/issues/34688
I originally wrote it this way semi-intentionally because I thought
cutting out the sample was worse than letting it play out, but I also
forgot that people use like seventy hour long fail samples.
Test was added in 5495c2090a to exercise a
previous version of the hotfix-workaround of not allowing seeking back.
Now that the hotfix-workaround also encompasses seeking *forward*, which
breaks another 100 tests, thus requiring the hotfix-workaround to be
turned off for tests, this situation is just completely out of
control. So I'm just removing the test because ugh.