fix travis build by switching away from deprecated-2017Q3 (#3650)

Also remove “sudo: false” as per
https://blog.travis-ci.com/2018-11-19-required-linux-infrastructure-migration

diff --git a/.travis.yml b/.travis.yml
index 8098035c84f2f640a135356ac11c3983485f3e1f..0133fc713842de547943da424b9432c82084a08c 100644 (file)
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,8 +1,4 @@
-sudo: false
 dist: trusty
-# TODO: remove “group” once trusty kernel is no longer affected by
-# https://github.com/google/sanitizers/issues/837
-group: deprecated-2017Q3
 services:
   - docker
 language: c