Delete .travis.yml

This file is no longer needed as workflows are run by GitHub Actions

Signed-off-by: Nathan Fallet <contact@nathanfallet.me>

.travis.yml

@@ -1,13 +0,0 @@
-language: generic
-matrix:
-   include:
-      # Test Ubuntu Linux 14.04
-       - os: linux
-         dist: trusty
-         sudo: required
-       - os: osx
-         osx_image: xcode11.4
-install:
-    - eval "$(curl -sL https://swiftenv.fuller.li/install.sh)"
-script:
-    - swift test -c release -Xswiftc -enable-testing -Xswiftc -DCI -Xswiftc -Xfrontend -Xswiftc -solver-memory-threshold -Xswiftc -Xfrontend -Xswiftc 999999999