Remove AdminCLI from PolicyService

frontend/admincli/Dockerfile

frontend/admincli/Makefile

frontend/admincli/README.md

frontend/admincli/opa.py

frontend/admincli/pipeline-test.yml

frontend/admincli/pol.py

frontend/admincli/rego/README.md

frontend/admincli/rego/ast.py

frontend/admincli/rego/walk.py

frontend/admincli/requirements-dev.txt

frontend/admincli/requirements.txt

frontend/admincli/run-integration-tests.sh

frontend/admincli/search_cli.py

frontend/admincli/setenv.sh

frontend/admincli/setenvsa.sh

frontend/admincli/tests/conftest.py

frontend/admincli/tests/create_tag_with_extension.json

frontend/admincli/tests/evaluate_query.json

frontend/admincli/tests/example.rego

frontend/admincli/tests/legaltag_create.json