Revert "btrfs: add ioctl to export size of global metadata reservation"
This reverts commit 01e219e8 . David Sterba found a different way to provide these features without adding a new ioctl. We haven't released any progs with this ioctl yet, so I'm taking this out for now until we finalize things. Signed-off-by: Chris Mason <firstname.lastname@example.org> Signed-off-by: David Sterba <email@example.com> CC: Jeff Mahoney <firstname.lastname@example.org>