Remove deprecated sudo setting. (#36)

diff --git a/.travis.yml b/.travis.yml
index 755e5d8..0a9407a 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -14,7 +14,6 @@
 # limitations under the License.

 

 language: java

-sudo: false

 

 jdk:

   - openjdk8