It is anyway shipped by default and carrying implementation of hash_hmac
is not really a good idea long term.
Signed-off-by: Michal Čihař <michal@cihar.com>
It now contains only hash polyfills, so let's have clear name.
Also remove no needed requires (it is already loaded from common).
Signed-off-by: Michal Čihař <michal@cihar.com>