message: Update .travis.yml
  took one of osx builds out
diff: @@ -29,10 +29,6 @@ matrix:
  osx_image: xcode8
  env:
  - MATRIX_EVAL="brew update && (brew outdated gcc5 || brew upgrade gcc5) && brew install gcc5 && CC=gcc-5 && CXX=g++-5"
  - - os: osx
  - osx_image: xcode8
  - env:
  - - MATRIX_EVAL="brew update && (brew outdated gcc6 || brew upgrade gcc6) && brew install gcc6 && CC=gcc-6 && CXX=g++-6"
  before_install:
  - eval "${MATRIX_EVAL}"
  