Code review comment for lp:~sergei.glushchenko/percona-xtrabackup/xb21-partial

For some weird reason 2>&1 doesn't work nice on Centos 5 with innodb51 flavor. Possibly --stats mix output to stderr and stout or something else happened. Anyways this bug is something different from we are trying to fix here. So, workaround is omit 2&>1. This leaves other parts of test untouched (i.e. 2>&1 was unnecessary). This is what I did.