bcachefs: Kill some obsolete sysfs code

fs internal/alloc_debug doesn't show anything bcachefs fs usage shows.

Signed-off-by: Kent Overstreet <kent.overstreet@gmail.com>
This commit is contained in:
Kent Overstreet 2021-12-14 14:24:04 -05:00 • committed by Kent Overstreet
commit 6df893fb11