Fix shellcheck on travis (#134)

paulirish · web-flow · commit 4eed00f282aa · 2018-12-03T18:24:29.000-08:00
diff --git a/.travis.yml b/.travis.yml
@@ -1,11 +1,5 @@
 language: node_js
 node_js: "node"
-addons:
-  apt:
-    sources:
-    - debian-sid    # Grab ShellCheck from the Debian repo
-    packages:
-    - shellcheck
 cache:
   directories:
     - node_modules
