fix(build): remove cache configuration from Travis

AdamJ · dgutride · commit d3e48e9dc5c9 · 2018-05-01T14:31:14.000-04:00
Remove the cache configuration from the Travis build process.
diff --git a/.travis.yml b/.travis.yml
@@ -2,9 +2,7 @@ language: node_js
 node_js:
   - '6'
 
-cache:
-  directories:
-    - node_modules
+cache: false
 
 addons:
   chrome: stable
