Disabling EVP_PKEY_sign and EVP_PKEY_verify also breaks EVP_SignFinal,
which is used by many applications, among them OpenSSH. This change thus
broke sshd in FIPS mode. Revert it for now until we found a better
solution.
Related: rhbz#2087147
Signed-off-by: Clemens Lang <cllang@redhat.com>