We do not need to check coverage for this project.

--- markdown-3.9/tox.ini.orig
+++ markdown-3.9/tox.ini
@@ -7,9 +7,7 @@
 deps = pytidylib
 allowlist_externals = coverage
 commands =
-    coverage run --source=markdown -m unittest discover {toxinidir}/tests
-    coverage xml
-    coverage report --show-missing
+    python -m unittest discover {toxinidir}/tests
 
 [testenv:pygments]
 # Run tests with pygments installed (override deps only).
--- markdown-3.9/pyproject.toml.orig
+++ markdown-3.9/pyproject.toml
@@ -49,7 +49,6 @@
 
 [project.optional-dependencies]
 testing = [
-    'coverage',
     'pyyaml'
 ]
 docs = [