fix yarn checkout

ryantxu · ryantxu · commit dce7e522c66d · 2019-12-23T11:57:53.000-08:00
diff --git a/.circleci/config.yml b/.circleci/config.yml
@@ -9,9 +9,6 @@ jobs:
 
     steps:
       - checkout
-      - run:
-          name: install yarn
-          command: 'sudo npm install -g yarn --quiet'
       - restore_cache:
           key: dependency-cache-{{ checksum "yarn.lock" }}
       - run:
