Remove pip installation of tensorflow

install/from-scratch.sh

@@ -87,13 +87,6 @@ ${CONDA} create --yes -n ${NAME} \
 echo "[>>] Pip-installing extra dependencies in environment ${NAME} for ${PYTHON_VERSION}..."
 source ${BASEDIR}/bin/activate ${NAME}
 
-# pip install tensorflow in mac
-if [ "$(uname)" == "Darwin" ]; then
-  pip install tensorflow
-  # test tensorflow
-  python -c "import tensorflow"
-fi
-
 # Cyvlfeat requires special instructions
 cyvlfeat=git+https://github.com/menpo/cyvlfeat@v0.4.5
 if [ "$(uname)" == "Linux" ]; then