gost28147: do not use GOST28147_CONTEXT outside of GOST 28147 calculation
* cipher/gost28147.c (_gcry_gost_enc_data): remove unused context argument * cipher/gostr3411-94.c (GOSTR3411_CONTEXT, gostr3411_init, do_hash_step): remove unused GOST 28147-89 context.
- Signed-off-by: Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>