Remove tests step from build process because failures didn't stop the build anyway and the tests were all hardwired in brittle ways

Author: nathan-contino

.github/workflows/build.yml

@@ -42,8 +42,6 @@ jobs:
         run: make build_doxygen_adoc
       - name: Build documentation
         run: make -j 2
-      - name: Run tests
-        run: ./tests/run_documentation_tests.sh
       - name: Deploy to Mythic Beasts
         if: ${{ github.ref == 'refs/heads/master' }}
         uses: ./.github/actions/deploy-action