Drop deprecated sudo: option in TravisCI config

PeterDaveHello · PeterDaveHello · commit 47cbca3b4d25 · 2020-09-21T20:28:09.000+08:00
That config was deprecated for a while, reference: - https://blog.travis-ci.com/2018-10-04-combining-linux-infrastructures
diff --git a/.travis.yml b/.travis.yml
@@ -1,6 +1,5 @@
 language: generic
 dist: xenial
-sudo: required
 addons:
   apt:
     packages:
