TravisCI: Remove deprecated sudo: false option

Turbo87 · Turbo87 · commit feee6e424506 · 2018-12-02T15:07:19.000+01:00
see https://blog.travis-ci.com/2018-11-19-required-linux-infrastructure-migration
diff --git a/.travis.yml b/.travis.yml
@@ -1,8 +1,6 @@
 language: python
 python: 2.7
 
-sudo: false
-
 matrix:
   include:
   - python: 2.7
