Remove obsolete OIDC functionality/enhancements

[rolsonquadras]

The internal auth framework was moved from OIDC to GNAP as part of https://github.com/trustbloc/auth/issues/159. Currently, there are some unused OIDC related code in auth, kms and edv.

Tasks:

• [x] https://github.com/trustbloc/kms/issues/326
• [x] https://github.com/trustbloc/kms/issues/330
• [ ] https://github.com/trustbloc/auth/issues/286
• [ ] Refactor EDV based on https://github.com/trustbloc/auth/issues/286
• [ ] Update kms, auth and edv images in wallet
• [ ] Update kms, auth, edv and wallet images Sandox