Revert "qa: add an fsx run which turns on kernel debugging"

This reverts commit 29c33f0c057acc4e0f4e5022c97553a2dc095b21.
We don't need the debugging any more, and having two separate fsx runners
already caused one update-in-the-wrong-place issue.

Signed-off-by: Greg Farnum <greg@inktank.com>