Drop travis

.travis.yml

@@ -1,24 +0,0 @@
-language: python
-
-matrix:
-    include:
-        - python: 3.7
-          dist: xenial
-          sudo: required
-
-before_install:
-    - sudo apt-get -qq update
-    # deps to build kivy from sources for use with trio
-    - sudo apt-get install -y build-essential libav-tools libgles2-mesa-dev libgles2-mesa-dev libsdl2-dev libsdl2-image-dev libsdl2-mixer-dev libsdl2-ttf-dev libportmidi-dev libswscale-dev libavformat-dev libavcodec-dev zlib1g-dev
-
-install:
-    - pip install pipenv
-    - cd $TRAVIS_BUILD_DIR
-    - pipenv install --dev -e .
-
-cache:
-    directories:
-        - $HOME/.config/piker/
-
-script:
-    - pipenv run pytest tests/