remove unbuildable Public Engines scripts
diff --git a/.travis.yml b/.travis.yml
index bcbefec..4d0de99 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -89,119 +89,3 @@
       script:
         - marvin test
         - codecov
-    # Public Engines
-    # # Public Engines - Linux
-    # - language: python
-    #   os: linux
-    #   python:
-    #     - 2.7
-    #     - 3.6
-    #   before_install:
-    #     - cd public-engines
-    #     - curl https://d3kbcqa49mib13.cloudfront.net/spark-2.1.1-bin-hadoop2.6.tgz -o ./spark-2.1.1-bin-hadoop2.6.tgz
-    #     - sudo tar -xf ./spark-2.1.1-bin-hadoop2.6.tgz
-    #     - mkdir -p marvin_data
-    #     - mkdir -p marvin_home
-    #     - export MARVIN_HOME=./marvin_home
-    #     - export MARVIN_DATA_PATH=./marvin_data
-    #     - export SPARK_HOME=./spark-2.1.1-bin-hadoop2.6
-    #     - if [[ "$TRAVIS_OS_NAME" == "osx" ]]; then sudo curl https://bootstrap.pypa.io/get-pip.py -o get-pip.py  ; fi
-    #     - if [[ "$TRAVIS_OS_NAME" == "osx" ]]; then sudo python get-pip.py         ; fi
-    #     - if [[ "$TRAVIS_OS_NAME" == "osx" ]]; then brew update                    ; fi
-    #     - if [[ "$TRAVIS_OS_NAME" == "osx" ]]; then brew install openssl graphviz  ; fi
-    #     - if [[ "$TRAVIS_OS_NAME" == "linux" ]]; then sudo apt-get install libsasl2-dev python-pip graphviz -y    ; fi
-    #     - sudo pip install --upgrade pip
-    #     - sudo pip install virtualenvwrapper --ignore-installed six
-    #     - source virtualenvwrapper.sh
-    #   install:
-    #     - if [[ "$TRAVIS_OS_NAME" == "osx" ]]; then mkvirtualenv nlp-ner-engine-env         ; fi
-    #     - if [[ "$TRAVIS_OS_NAME" == "osx" ]]; then mkvirtualenv sms-spam-engine-env        ; fi
-    #     - if [[ "$TRAVIS_OS_NAME" == "osx" ]]; then mkvirtualenv iris-species-engine-env    ; fi
-    #     - if [[ "$TRAVIS_OS_NAME" == "osx" ]]; then mkvirtualenv image-classification-engine-env    ; fi
-    #     - if [[ "$TRAVIS_OS_NAME" == "osx" ]]; then mkvirtualenv product-classifier-engine-env      ; fi
-    #     - if [[ "$TRAVIS_OS_NAME" == "osx" ]]; then mkvirtualenv mnist-keras-engine-env     ; fi
-    #     - if [[ "$TRAVIS_OS_NAME" == "osx" ]]; then mkvirtualenv kaggle-titanic-engine-env          ; fi
-    #   script:
-    #     - cd nlp-ner-engine
-    #     - make clean marvin
-    #     - marvin test
-    #     - cd ..
-    #     - cd sms-spam-engine
-    #     - make clean marvin
-    #     - marvin test
-    #     - cd ..
-    #     - cd iris-species-engine
-    #     - make clean marvin
-    #     - marvin test
-    #     - cd ..
-    #     - cd image-classification-engine
-    #     - make clean marvin
-    #     - marvin test
-    #     - cd ..
-    #     - cd mnist-keras-engine
-    #     - make clean marvin
-    #     - marvin test
-    #     - cd ..
-    #     - cd product-classifier-engine
-    #     - make clean marvin
-    #     - marvin test
-    #     - cd ..
-    #     - cd kaggle-titanic-engine
-    #     - make clean marvin
-    #     - marvin test
-    # # Public Engines - OSX
-    # - language: generic
-    #   os: osx
-    #   before_install:
-    #     - cd public-engines
-    #     - curl https://d3kbcqa49mib13.cloudfront.net/spark-2.1.1-bin-hadoop2.6.tgz -o ./spark-2.1.1-bin-hadoop2.6.tgz
-    #     - sudo tar -xf ./spark-2.1.1-bin-hadoop2.6.tgz
-    #     - mkdir -p marvin_data
-    #     - mkdir -p marvin_home
-    #     - export MARVIN_HOME=./marvin_home
-    #     - export MARVIN_DATA_PATH=./marvin_data
-    #     - export SPARK_HOME=./spark-2.1.1-bin-hadoop2.6
-    #     - if [[ "$TRAVIS_OS_NAME" == "osx" ]]; then sudo curl https://bootstrap.pypa.io/get-pip.py -o get-pip.py  ; fi
-    #     - if [[ "$TRAVIS_OS_NAME" == "osx" ]]; then sudo python get-pip.py         ; fi
-    #     - if [[ "$TRAVIS_OS_NAME" == "osx" ]]; then brew update                    ; fi
-    #     - if [[ "$TRAVIS_OS_NAME" == "osx" ]]; then brew install openssl graphviz  ; fi
-    #     - if [[ "$TRAVIS_OS_NAME" == "linux" ]]; then sudo apt-get install libsasl2-dev python-pip graphviz -y    ; fi
-    #     - sudo pip install --upgrade pip
-    #     - sudo pip install virtualenvwrapper --ignore-installed six
-    #     - source virtualenvwrapper.sh
-    #   install:
-    #     - if [[ "$TRAVIS_OS_NAME" == "osx" ]]; then mkvirtualenv nlp-ner-engine-env         ; fi
-    #     - if [[ "$TRAVIS_OS_NAME" == "osx" ]]; then mkvirtualenv sms-spam-engine-env        ; fi
-    #     - if [[ "$TRAVIS_OS_NAME" == "osx" ]]; then mkvirtualenv iris-species-engine-env    ; fi
-    #     - if [[ "$TRAVIS_OS_NAME" == "osx" ]]; then mkvirtualenv image-classification-engine-env    ; fi
-    #     - if [[ "$TRAVIS_OS_NAME" == "osx" ]]; then mkvirtualenv product-classifier-engine-env      ; fi
-    #     - if [[ "$TRAVIS_OS_NAME" == "osx" ]]; then mkvirtualenv mnist-keras-engine-env     ; fi
-    #     - if [[ "$TRAVIS_OS_NAME" == "osx" ]]; then mkvirtualenv kaggle-titanic-engine-env          ; fi
-    #   script:
-    #     - cd nlp-ner-engine
-    #     - make clean marvin
-    #     - marvin test
-    #     - cd ..
-    #     - cd sms-spam-engine
-    #     - make clean marvin
-    #     - marvin test
-    #     - cd ..
-    #     - cd iris-species-engine
-    #     - make clean marvin
-    #     - marvin test
-    #     - cd ..
-    #     - cd image-classification-engine
-    #     - make clean marvin
-    #     - marvin test
-    #     - cd ..
-    #     - cd mnist-keras-engine
-    #     - make clean marvin
-    #     - marvin test
-    #     - cd ..
-    #     - cd product-classifier-engine
-    #     - make clean marvin
-    #     - marvin test
-    #     - cd ..
-    #     - cd kaggle-titanic-engine
-    #     - make clean marvin
-    #     - marvin test