Use covdefaults to handle coveragerc
diff --git a/requirements-dev.txt b/requirements-dev.txt
index cf74d9f..67f6485 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -1,6 +1,4 @@
--e .
-
+covdefaults
 coverage
-mock
 pre-commit
 pytest