Remove .travis.yml file

The tests are now performed via github actions

.coveragerc

@@ -1,2 +0,0 @@
-[run]
-omit = *migrations*

.travis.yml

@@ -1,54 +0,0 @@
-language: python
-dist: bionic
-
-services:
-  - postgresql
-
-# Cache the pip files
-cache:
-  directories:
-    - $HOME/.cache/pip
-    - $HOME/.nvm
-    - node_modules
-    - wger/node_modules
-
-# Python versions to test
-python:
-  - "3.6"
-  - "3.7"
-  - "3.8"
-
-node_js: 10
-
-env:
-  - DB=postgresql
-  - DB=sqlite
-
-# Install the application
-install:
-  # Install requirements
-  - pip install -r requirements_dev.txt
-  - python setup.py develop
-  - cd wger
-  - if [[ "$DB" = "postgresql" ]]; then pip install psycopg2; fi
-
-  # Setup application
-  - if [[ "$DB" = "sqlite" ]]; then wger create-settings; fi
-  - if [[ "$DB" = "postgresql" ]]; then wger create-settings --database-type postgresql; fi
-
-  # change back to the source folder
-  - cd ..
-
-# Create test databases
-before_script:
-  - if [[ "$DB" = "postgresql" ]]; then psql -c 'DROP DATABASE IF EXISTS test_wger;' -U postgres; fi
-  - if [[ "$DB" = "postgresql" ]]; then psql -c 'CREATE DATABASE test_wger;' -U postgres; fi
-
-# Do the tests
-script:
-
-  # Regular application
-  - coverage run --source='.' ./manage.py test --parallel
-
-  # Code coverage
-  - coverage report

docs/tips_and_tricks.rst

@@ -142,8 +142,7 @@ Contributing
   people insist on rebasing before sending a pull request, it's not necessary.
 
 * **Run the tests**: wger is proud to have a test coverage of over 90%. When you
-  implement something new, don't forget to run the testsuite and write approriate
-  tests for the new code. If you use github, configure the awesome Travis CI,
-  there is already a .travis file in the sources.
+  implement something new, don't forget to run the testsuite and write appropriate
+  tests for the new code.
 
 * **Code according to the coding style**: :ref:`codingstyle`