build: remove deprecated Travis CI directive

dougwilson · dougwilson · commit ce15462eed9d · 2020-03-20T00:23:17.000-04:00
diff --git a/.travis.yml b/.travis.yml
@@ -16,7 +16,6 @@ node_js:
   - "11.15"
   - "12.16"
   - "13.11"
-sudo: false
 cache:
   directories:
     - node_modules
