apikeys: module removal
apikeys: module removal

* INCOMPATIBLE Removes deprecated apikeys module. Please use
  OAuth2Server authentication tokens instead.  (closes #3417)

Reviewed-by: Lars Holm Nielsen <7eaffca9f7cd98839b5821d0d23e09ff764b82cd@cern.ch>
Signed-off-by: Jiri Kuncar <2bdffcb416fed3002465740d19a053a39918cbe5@cern.ch>

tiborsimko/invenio-access,tiborsimko/invenio-access,inveniosoftware/invenio-access,inveniosoftware/invenio-access