remove jdk6 from travis.yml

remove jdk6 from travis.yml

Author: DivyaDosibhatla

.travis.yml

@@ -1,16 +1,6 @@
 language: java
+"dist": "trusty"
+
 jdk:
-  - openjdk6
-  - openjdk7
-  - oraclejdk8
-addons:
-  apt:
-    packages:
-      - openjdk-6-jdk
-# use java 6 compatible maven version
-before_install:
-  - wget https://archive.apache.org/dist/maven/maven-3/3.2.5/binaries/apache-maven-3.2.5-bin.zip
-  - unzip -qq apache-maven-3.2.5-bin.zip
-  - export M2_HOME=$PWD/apache-maven-3.2.5
-  - export PATH=$M2_HOME/bin:$PATH
-install: true
+   - openjdk7
+   - oraclejdk8