d1502e9ed0
The error message in zpool_vdev_remove() said top-level devices could be removed, but that has never been true. Reported-by: Colin Ian King <colin.king@canonical.com> Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Richard Laager <rlaager@wiktel.com> Closes #4506 Closes #5213