setup: introduce ruff

* remove unused .tx. the translation is done without transifex

* remove unused files

* remove unused checks because ruff took over

run-tests.sh

@@ -3,7 +3,7 @@
 #
 # Copyright (C) 2019-2020 CERN.
 # Copyright (C) 2019-2020 Northwestern University.
-# Copyright (C) 2020 Graz University of Technology.
+# Copyright (C) 2020-2024 Graz University of Technology.
 #
 # invenio-config-tugraz is free software; you can redistribute it and/or
 # modify it under the terms of the MIT License; see LICENSE file for more
@@ -16,17 +16,8 @@ set -o errexit
 # Quit on unbound symbols
 set -o nounset
 
-# Always bring down docker services
-
-function cleanup() {
-    eval "$(docker-services-cli down --env)"
-}
-trap cleanup EXIT
+ruff check .
 
 python -m check_manifest
 python -m sphinx.cmd.build -qnN docs docs/_build/html
-eval "$(docker-services-cli up --search ${SEARCH:-elasticsearch} --env)"
 python -m pytest
-tests_exit_code=$?
-python -m sphinx.cmd.build -qnN -b doctest docs docs/_build/doctest
-exit "$tests_exit_code"