Travis: remove obsolete option
authorRuben Kerkhof <ruben@rubenkerkhof.com>
Tue, 12 Feb 2019 10:15:49 +0000 (11:15 +0100)
committerRuben Kerkhof <ruben@rubenkerkhof.com>
Tue, 12 Feb 2019 10:15:49 +0000 (11:15 +0100)
commit7f21554b8a4fa957cbca7ac64df638aa726f7c0f
tree2ee56dabea1ac794bb650d42dc709f4c13027f2f
parentce5ef4f226eae47679f9958a6f9126a660de12b2
Travis: remove obsolete option

The container builds are deprecated:
https://changelog.travis-ci.com/the-container-based-build-environment-is-fully-deprecated-84517
.travis.yml