Fix .travis.yml

.travis.yml

-sudo: true
 
-    # fully specify builds, include can't dynamically expand matrix entries
-    # relative order of sudo and env is important so that addons: is recognized
-    - os: linux
-      dist: trusty
-      sudo: required
-      env: TARGET="linux"
-      addons:
-        apt:
-          sources:
-          - ubuntu-toolchain-r-test
-          packages:
-          - gcc-4.9
-          - g++-4.9
 matrix:
   include:
     - os: osx
     - os: linux
       dist: trusty
-    - os: linux
-      sudo: false
-      cache:
-        directories:
-        - ~/.pyenv
 
 env:
 - PYENV_PYTHON_VERSION=3.5.0