We do not need to check coverage for this project.

--- h11-0.16.0/test-requirements.txt.orig
+++ h11-0.16.0/test-requirements.txt
@@ -1,2 +1 @@
 pytest
-pytest-cov
--- h11-0.16.0/tox.ini.orig
+++ h11-0.16.0/tox.ini
@@ -14,7 +14,7 @@
 
 [testenv]
 deps = -r{toxinidir}/test-requirements.txt
-commands = pytest --cov=h11 --cov-config=.coveragerc h11
+commands = pytest h11
 
 [testenv:format]
 basepython = python3.8