btrfs: remove out-of-date comments regarding 2K block size

Since commit bac3c2910c ("btrfs: remove 2K block size support") there
is no 2K block size support inside btrfs anymore.

Remove the stale comments of btrfs_supported_blocksize().

Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Signed-off-by: Qu Wenruo <wqu@suse.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
Qu Wenruo 2026-06-19 18:24:46 +09:30 • committed by David Sterba
commit 6eb2fe0724