[Python-checkins] bpo-39035: travis: Update image to xenial (GH-17622)

[Ned Deily]

https://github.com/python/cpython/commit/7699281b72b862797a89fcad004da8f58e93c800
commit: 7699281b72b862797a89fcad004da8f58e93c800
branch: 3.6
author: Inada Naoki <songofacandy at gmail.com>
committer: Ned Deily <nad at python.org>
date: 2019-12-16T18:20:44-05:00
summary:

bpo-39035: travis: Update image to xenial (GH-17622)

files:
M .travis.yml

diff --git a/.travis.yml b/.travis.yml
index 8250fd91b3d9a..0c4c28e8295bc 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,7 +1,5 @@
 language: c
-dist: trusty
-sudo: false
-group: beta
+dist: xenial
 
 # To cache doc-building dependencies and C compiler output.
 cache: