Fix version usage + remove broken GHA job.

.github/workflows/tests.yml

@@ -39,18 +39,3 @@ jobs:
         run: |
           python -m pip install tox
           python -m tox -e docs
-
-  linkcheck:
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v2
-
-      - name: Set up Python 3.8
-        uses: actions/setup-python@v1
-        with:
-          python-version: 3.8
-
-      - name: Run sphinx
-        run: |
-          python -m pip install tox
-          python -m tox -e linkcheck

setup.py

@@ -22,10 +22,7 @@
     packages=find_packages(exclude=['docs', 'tests*']),
     include_package_data=True,
     zip_safe=False,
-    use_scm_version=True,
-    setup_requires=[
-        'setuptools_scm',
-    ],
+    version='2.0.dev0',
     install_requires=[
         'jinja2 >= 2.4',
         'jsonschema >= 3.0',