Remove sudo: false from .travis.yml it is obsolete.
diff --git a/.travis.yml b/.travis.yml
index ff150e0..2883397 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -17,8 +17,6 @@
 
 language: java
 
-sudo: false # faster builds
-
 dist: trusty
 
 jdk: