btrfs: remove old unused commented out code
Remove code which has been #if0-ed out for a very long time and does not seem to be related to current codebase anymore. Signed-off-by: David Sterba <dsterba@suse.cz>
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Remove code which has been #if0-ed out for a very long time and does not seem to be related to current codebase anymore. Signed-off-by: David Sterba <dsterba@suse.cz>