Remove redundant dependencies

setup.cfg

@@ -45,18 +45,13 @@ testing =
 
 	# local
     mock
-    pytest-flake8
     flake8-2020
     virtualenv>=13.0.0
     pytest-virtualenv>=1.2.7
-    pytest>=3.7
     wheel
-    coverage>=4.5.1
-    pytest-cov>=2.5.1
     paver
     pip>=19.1 # For proper file:// URLs support.
     jaraco.envs
-    jaraco.test >= 3.1.1; python_version >= "3.6"
 
 docs =
     # Keep these in sync with docs/requirements.txt