autotest: Remove ancient fsdev test

This test is mentioned nowhere and predates much work on ChromeOS.

TEST=git grep fsdev returns no hits, either here, or in our ebuilds.
BUG=chromium:324963

Change-Id: I43f2a37bd68bacdc4e6e34fdf8f08e28d92e1ba0
Reviewed-on: https://chromium-review.googlesource.com/178608
Tested-by: Christopher Wiley <wiley@chromium.org>
Reviewed-by: Aviv Keshet <akeshet@chromium.org>
Commit-Queue: Christopher Wiley <wiley@chromium.org>
5 files changed