back out change to python versions in travis

.travis.yml

@@ -2,21 +2,18 @@ sudo: true
 language: java
 script:
   - mvn install
-python:
-  - 2.7
-  - 3.5
 jdk:
   - openjdk6
   - oraclejdk7
   - oraclejdk8
-before_install: 
+before_install:
   - sudo apt-key adv --keyserver hkp://keyserver.ubuntu.com:80 --recv-keys 3FA7E0328081BFF6A14DA29AA6A19B38D3D831EF
   - sudo add-apt-repository ppa:fkrull/deadsnakes -y
   - sudo add-apt-repository ppa:rwky/nodejs -y
-  - sudo apt-get update -qq 
+  - sudo apt-get update -qq
   - sudo apt-get install -qq python3.5
   - sudo apt-get install -qq nodejs
   - echo "deb http://download.mono-project.com/repo/debian wheezy/snapshots/3.12.1 main" | sudo tee /etc/apt/sources.list.d/mono-xamarin.list
   - sudo apt-get install -qq mono-complete
-  - python --version  
-  - python3 --version  
+  - python --version
+  - python3 --version