git ls-files -z -- .coveragerc | xargs -0 sed -i '/ \*\/tmp\*/d'

Committed via https://github.com/asottile/all-repos

.coveragerc

diff --git a/.coveragerc b/.coveragerc
index 732613b..0a55c5f 100644
--- a/.coveragerc
+++ b/.coveragerc
@@ -5,7 +5,6 @@
 omit =
     .tox/*
     /usr/*
-    */tmp*
     setup.py
     get-git-lfs.py