Don't conda install arrow-cpp during Travis build

Change-Id: Iebe3e412ef32ae53285c434596502f8850638f8a

.travis.yml

@@ -32,8 +32,7 @@ matrix:
     - $TRAVIS_BUILD_DIR/ci/travis_script_cpp.sh
     - $TRAVIS_BUILD_DIR/ci/travis_script_python.sh
   - compiler: clang
-    language: objective-c
-    osx_image: xcode6.4
+    osx_image: beta-xcode6.1
     os: osx
     addons:
     before_script:

ci/travis_script_python.sh

@@ -38,10 +38,6 @@ python_version_tests() {
   # Expensive dependencies install from Continuum package repo
   conda install -y pip numpy pandas cython
 
-  # conda install -y parquet-cpp
-
-  conda install -y arrow-cpp -c apache/channel/dev
-
   # Other stuff pip install
   pip install -r requirements.txt