pytest-cov is not needed to run tests.

--- pep440-0.1.2/pyproject.toml.orig
+++ pep440-0.1.2/pyproject.toml
@@ -23,7 +23,6 @@
 [project.optional-dependencies]
 test = [
     "pytest-console-scripts",
-    "pytest-cov",
     "pytest",
 ]
 lint = [