remove old shippable cfg file

shippable.yml

-dist: xenial
-sudo: required
-language: python
-python:
-  - "2.7"
-
-branches:
-  only:
-    - master
-    - ci_shippable
-
-before_install:
-  - sudo apt-get update -qq
-  - sudo apt-get install -qq build-essential
-  - sudo apt-get install -qq cmake
-  - sudo apt-get install -qq libgmm++-dev libeigen3-dev
-  - sudo apt-get install -qq libtbb-dev
-  - sudo apt-get install -qq libmumps-seq-dev libopenblas-dev
-  - sudo apt-get install -qq python-dev
-  - sudo apt-get install -qq libopenmpi-dev python-mpi4py
-  - sudo apt-get install -qq swig
-  # vtk 6.2 for ubuntu 16.04
-  - sudo apt-get install -qq libvtk6.2 libvtk6-dev libvtk6-qt-dev python-vtk6 python-pyqt5
-  - sudo apt-get install -qq python-numpy python-scipy python-matplotlib
-  # ubuntu 16.04
-  - sudo apt-get install libproj-dev
-  - wget http://gmsh.info/bin/Linux/gmsh-3.0.6-Linux64.tgz
-  - tar -xzvf gmsh-3.0.6-Linux64.tgz
-  - sudo ln -s $PWD/gmsh-3.0.6-Linux64/bin/gmsh /usr/bin/gmsh
-  # add dist-package to pythonpath
-  - export PYTHONPATH="${PYTHONPATH}:/usr/lib/python2.7/dist-packages"
-  - export PYTHONPATH="${PYTHONPATH}:/usr/lib/python2.7/lib-dynload"
-
-install:
-  - mkdir build
-  - cd build
-  - cmake -C ../CMake/disable-trilinos.cmake ..
-  - make
-
-script:
-  - ctest --verbose
-
-integrations:
-  notifications:
-    - integrationName: slack   
-      type: slack
-      recipients:
-        - "#waves"
-