This reverts commit 7e8dec91.

RSA verification implementation does not use this code.
James Morris has asked to remove that.
Signed-off-by: NDmitry Kasatkin <dmitry.kasatkin@intel.com>
Requested-by: NJames Morris <james.l.morris@oracle.com>
Signed-off-by: NJames Morris <james.l.morris@oracle.com>