build: remove sudo:false from .travis.yml

Trott · Trott · commit b58440e6114d · 2018-11-19T22:38:38.000-08:00
sudo:false is being removed by Travis CI. Travis CI recommends removing the configuration. Fixes: nodejs#24510
diff --git a/.travis.yml b/.travis.yml
@@ -1,5 +1,4 @@
 language: cpp
-sudo: false
 cache: ccache
 os: linux
 matrix:
