Remove check-python-release role

The check-python-release role is still running 'setup.py check' against
the repo. That command is obsolete, and should be replaced with twine.
The pti-python-tarball/check.yaml playbook already runs twine, so we can
just remove the role with the obsolete command to have it tested with
twine.

Change-Id: I99469da7b0f06656524d97d788b7440e1ed8ad4f

playbooks/pti-python-tarball/check.yaml

@@ -1,6 +1,5 @@
 - hosts: all
   roles:
-    - check-python-release
     - build-python-release
     - ensure-twine
   post_tasks:

roles/check-python-release/README.rst

@@ -1,16 +0,0 @@
-Test building sdist and wheel for Python projects and verify their
-metadata.
-
-** Role Variables **
-
-.. zuul:rolevar:: release_python
-   :default: python
-
-   The python interpreter to use. Set it to "python3" to use python 3,
-   for example.
-
-.. zuul:rolevar:: check_python_release_virtualenv
-   :default: {{ansible_user_dir}}/.venv
-
-   The location for the virtualenv used to install the tools needed to
-   check the packaging metadata for the project.

roles/check-python-release/defaults/main.yaml

@@ -1,3 +0,0 @@
-zuul_work_dir: "{{ zuul.project.src_dir }}"
-release_python: "python"
-check_python_release_virtualenv: "{{ ansible_user_dir }}/.venv"

roles/check-python-release/tasks/main.yaml

@@ -1,25 +0,0 @@
-- name: Install docutils for the README check
-  # NOTE(dhellmann): We install this unconstrained because we expect
-  # setuptools to expect the most recent version anyway. We use a
-  # virtualenv to avoid conflicts with system packages due to pip10
-  # and later.
-  pip:
-    name: docutils
-    virtualenv: "{{ check_python_release_virtualenv }}"
-    virtualenv_python: "{{ release_python }}"
-    chdir: "{{ zuul_work_dir }}"
-
-- name: Install Pygments for the README check
-  # Pygments needs to be installed to allow the metadata and README
-  # check parse project READMEs that have code blocks in the
-  # README.rst file.
-  pip:
-    name: Pygments
-    virtualenv: "{{ check_python_release_virtualenv }}"
-    virtualenv_python: "{{ release_python }}"
-    chdir: "{{ zuul_work_dir }}"
-
-- name: Check the package metadata and README format
-  command: "{{ check_python_release_virtualenv }}/bin/{{ release_python }} setup.py check --restructuredtext --strict"
-  args:
-    chdir: "{{ zuul_work_dir }}"