openstack-base: drop anyjson

It is required only in Tacker and fails to be installed.

And even Tacker does not use it...

Change-Id: Ic8ebe4089c84f923c24697d632eb294a262059a8
(cherry picked from commit ec06d44)

Author: hrw

docker/openstack-base/Dockerfile.j2

@@ -25,7 +25,6 @@ LABEL maintainer="{{ maintainer }}" name="{{ image_name }}" build-date="{{ build
             'openssl',
             'python3-PyYAML',
             'python3-alembic',
-            'python3-anyjson',
             'python3-aodhclient',
             'python3-barbicanclient',
             'python3-cachetools',
@@ -210,7 +209,6 @@ ENV DEBIAN_FRONTEND noninteractive
         'WebOb',
         'alembic',
         'amqp',
-        'anyjson',
         'aodhclient',
         'appdirs',
         'automaton',