xfs_repair: remove the old rmap collection slabs

Now that we've switched the offline repair code to use an in-memory
rmap btree for everything except recording the rmaps for the newly
generated per-AG btrees, get rid of all the old code.

Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
5 files changed