Revert "std.os: Fix std.os.chdir for WASI"

This reverts commit fff7f15fb88f6683f9d73565d8d59593ecf7461a.

This commit was not intended to be cherry-picked into the 0.10.x branch.
537618464aAndrew Kelley committed on 1/10/2023, 7:45:09 AMparentb9ea086
3 files changedLine totals unavailable