build: disable npm cache

pvdlg · pvdlg · commit 2a09f7d2c1cc · 2020-02-26T01:38:07.000-05:00
diff --git a/.travis.yml b/.travis.yml
@@ -10,8 +10,7 @@ branches:
     - /^greenkeeper.*$/
 
 cache:
-  directories:
-    - ~/.npm
+  npm: false
 
 install:
   - travis_retry npm install
