[master] 32f160a46 [cci] unneeded env var

[Guillaume Quintard]

commit 32f160a46be44da6cdffa69a1e8b064aa3c9cfc6
Author: Guillaume Quintard <guillaume at varnish-software.com>
Date:   Mon Feb 3 11:53:37 2020 -0800

    [cci] unneeded env var

diff --git a/.circleci/config.yml b/.circleci/config.yml
index 74a8c0cbe..44fee78dc 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -313,7 +313,6 @@ jobs:
       - image: centos:<< parameters.release >>
     environment:
       DIST_DIR: build
-      DIST: el7
     steps:
       - run:
           name: Install packaging tools