Remove .travis.yml (we use GitHub Actions nowadays)

.travis.yml

@@ -1,60 +0,0 @@
-language: cpp
-sudo: false
-matrix:
-  include:
-    - compiler: clang
-      env: PYTHONV=python3 FLAGS=--installer
-    - compiler: clang
-      env: PYTHONV=python3 FLAGS=--override=STDFLOAT_DOUBLE=1
-    - compiler: gcc
-      env: PYTHONV=python3 FLAGS=--optimize=4
-      before_install:
-        - export CC=gcc-4.7
-        - export CXX=g++-4.7
-    - compiler: clang
-      env: PYTHONV=python3 FLAGS=--no-python SKIP_TESTS=1
-addons:
-  apt:
-    sources:
-    - ubuntu-toolchain-r-test
-    packages:
-    - gcc-4.7
-    - g++-4.7
-    - bison
-    - flex
-    - libfreetype6-dev
-    - libgl1-mesa-dev
-    - libjpeg-dev
-    - libode-dev
-    - libopenal-dev
-    - libpng-dev
-    - libssl-dev
-    - libvorbis-dev
-    - libx11-dev
-    - libxcursor-dev
-    - libxrandr-dev
-    - nvidia-cg-toolkit
-    - python-dev
-    - python3-dev
-    - python-virtualenv
-    - zlib1g-dev
-    - fakeroot
-install:
-    - virtualenv --python=$PYTHONV venv && source venv/bin/activate
-    - $PYTHONV -m pip install pytest
-script:
-    - $PYTHONV makepanda/makepanda.py --everything --git-commit $TRAVIS_COMMIT $FLAGS --threads 4
-    - test -n "$SKIP_TESTS" || LD_LIBRARY_PATH=built/lib PYTHONPATH=built $PYTHONV -m pytest -v tests
-notifications:
-  irc:
-    channels:
-      - secure: "jfwHT9RHAVOGRGTMY8TpYKJI6rq8nFoIj41Y0soZdJQNWtSSFEK9AyzZeMY+2dHga7cR/X+/0NWZ2ehhedTnd9FvlzOnMWWC3K0I/b3XWbEdVEqIZnggFkKGqs82Gy3omguRC63yWupeJCcSCckIhoWbLzWy6xV8lF5WC80iXi8="
-    on_success: change
-    on_failure: always
-    use_notice: true
-    skip_join: false
-  webhooks:
-    urls:
-      - https://www.panda3d.org/webhooks/travis-ci.php
-    on_success: change
-    on_failure: always