removed travis CI

.travis.yml

-os: linux
-dist: xenial
-language: python
-python:
-  - "2.7"
-  - "3.6"
-  - "3.7"
-  - "3.8"
-  - "3.9"
-before_install:
-  - nvm install 14.9.0  # need recent version of nodejs
-  - pip install --upgrade pip
-install:
-  - pip install -r requirements.txt
-  - pip install flake8 pytest pytest-mock
-
-addons:
-  apt:
-    packages:
-      - libgtest-dev
-      
-before_script:
-  # fail the build if there are Python syntax errors or undefined names
-  - flake8 . --count --select=E9,F63,F7,F82 --show-source --statistics
-  # exit-zero treats all errors as warnings. The GitHub web ui editor is 127 chars wide
-  - SELECT=C,E10,E11,E401,E502,E703,E8,E9,F,W191,W291,W292,W293,W391
-  - flake8 . --count --exit-zero --select=${SELECT} --max-complexity=10 --max-line-length=127 --statistics
-script:
-  # NOTE: we must do all testing on the installed python package, not
-  # on the build tree. Otherwise the testing is invalid and may not
-  # indicate the code actually works
-  #
-  # Set pythonpath
-
-  # install
-  - git clone git://github.com/ArduPilot/mavlink.git
-  - ln -s $PWD/mavlink/message_definitions ../
-  - python setup.py build install
-
-  # Generate messages
-  - mavgen.py --lang='C'          --output=/tmp/mavgen_test mavlink/message_definitions/v1.0/common.xml --wire-protocol=1.0 --strict-units
-  - mavgen.py --lang='CS'         --output=/tmp/mavgen_test mavlink/message_definitions/v1.0/common.xml --wire-protocol=1.0 --strict-units
-  - mavgen.py --lang='JavaScript' --output=/tmp/mavgen_test mavlink/message_definitions/v1.0/common.xml --wire-protocol=1.0 --strict-units
-  - mavgen.py --lang='Python'     --output=/tmp/mavgen_test mavlink/message_definitions/v1.0/common.xml --wire-protocol=1.0 --strict-units
-  - mavgen.py --lang='WLua'       --output=/tmp/mavgen_test mavlink/message_definitions/v1.0/common.xml --wire-protocol=1.0 --strict-units
-  - mavgen.py --lang='ObjC'       --output=/tmp/mavgen_test mavlink/message_definitions/v1.0/common.xml --wire-protocol=1.0 --strict-units
-  - mavgen.py --lang='Swift'      --output=/tmp/mavgen_test mavlink/message_definitions/v1.0/common.xml --wire-protocol=1.0 --strict-units
-  - mavgen.py --lang='Java'       --output=/tmp/mavgen_test mavlink/message_definitions/v1.0/common.xml --wire-protocol=1.0 --strict-units
-
-  - mavgen.py --lang='C'          --output=/tmp/mavgen_test mavlink/message_definitions/v1.0/common.xml --wire-protocol=2.0 --strict-units
-  - mavgen.py --lang='CS'         --output=/tmp/mavgen_test mavlink/message_definitions/v1.0/common.xml --wire-protocol=2.0 --strict-units
-  - mavgen.py --lang='JavaScript' --output=/tmp/mavgen_test mavlink/message_definitions/v1.0/common.xml --wire-protocol=2.0 --strict-units
-  - mavgen.py --lang='TypeScript' --output=/tmp/mavgen_test mavlink/message_definitions/v1.0/common.xml --wire-protocol=2.0 --strict-units
-  - mavgen.py --lang='Python'     --output=/tmp/mavgen_test mavlink/message_definitions/v1.0/common.xml --wire-protocol=2.0 --strict-units
-  - mavgen.py --lang='WLua'       --output=/tmp/mavgen_test mavlink/message_definitions/v1.0/common.xml --wire-protocol=2.0 --strict-units
-  - mavgen.py --lang='ObjC'       --output=/tmp/mavgen_test mavlink/message_definitions/v1.0/common.xml --wire-protocol=2.0 --strict-units
-  - mavgen.py --lang='Swift'      --output=/tmp/mavgen_test mavlink/message_definitions/v1.0/common.xml --wire-protocol=2.0 --strict-units
-  - mavgen.py --lang='Java'       --output=/tmp/mavgen_test mavlink/message_definitions/v1.0/common.xml --wire-protocol=2.0 --strict-units
-  - mavgen.py --lang='C++11'      --output=/tmp/mavgen_test mavlink/message_definitions/v1.0/common.xml --wire-protocol=2.0 --strict-units # C++11 generator only supports 2.0
-
-  - ./test_generator.sh
-
-  # Avoid `spurious errors` caused by ~/.npm permission issues
-  # ref: https://github.com/travis-ci/travis-ci/issues/2244
-  # ref: https://github.com/npm/npm/issues/4815
-  # Does it already exist? Who owns? What permissions?
-  - ls -lah ~/.npm || mkdir ~/.npm
-  # Make sure we own it
-  # $USER references the current user in Travis env
-  - sudo chown -R $USER ~/.npm
-  - "cd generator/javascript && npm test"
-
-  # Run tests
-  - cd $TRAVIS_BUILD_DIR
-  - python -m pytest