Remove linux testing on travis.

Author: abergeron

.travis.yml

@@ -2,27 +2,13 @@ language: c
 
 matrix:
   include:
-    - os: linux
-      compiler: gcc
-    - os: linux
-      compiler: clang
     - os: osx
       compiler: clang
 
-addons:
-  apt:
-    sources:
-      - kalakris-cmake
-      - george-edison55-precise-backports
-    packages:
-      - cmake
-      - cmake-data
-      - doxygen
-
 before_install:
   - export PREFIX=$HOME/.local
-  - if [[ "$TRAVIS_OS_NAME" == "osx" ]]; then brew update && brew install doxygen; fi
-  - if [[ "$TRAVIS_OS_NAME" == "osx" ]]; then export PYTHONUSERBASE=$PREFIX; fi
+  - brew update && brew install doxygen; fi
+  - export PYTHONUSERBASE=$PREFIX; fi
   - pip install --user breathe sphinx==1.6.3 sphinx_rtd_theme cython numpy 'mako>=0.7' six
   - export PATH=$PATH:$PREFIX/bin
   - export CPATH=$CPATH:$PREFIX/include