Remove Travis CI badge

Author: tarleb

README.md

@@ -1,7 +1,6 @@
 # hslua-module-doclayout
 
 [![GitHub CI][CI badge]](https://github.com/hslua/hslua-module-doclayout/actions)
-[![Build status][Travis badge]](https://travis-ci.org/hslua/hslua-module-doclayout)
 [![Hackage][Hackage badge]](https://hackage.haskell.org/package/hslua-module-doclayout)
 [![Stackage Lts][Stackage Lts badge]](http://stackage.org/lts/package/hslua-module-doclayout)
 [![Stackage Nightly][Stackage Nightly badge]](http://stackage.org/nightly/package/hslua-module-doclayout)
@@ -11,7 +10,6 @@ Lua module wrapping the [doclayout] Haskell package.
 
 [doclayout]: https://hackage.haskell.org/package/doclayout
 [CI badge]: https://github.com/hslua/hslua-module-doclayout/workflows/CI/badge.svg
-[Travis badge]: https://img.shields.io/travis/hslua/hslua-module-doclayout.svg?logo=travis
 [Hackage badge]: https://img.shields.io/hackage/v/hslua-module-doclayout.svg?logo=haskell
 [Stackage Lts badge]: http://stackage.org/package/hslua-module-doclayout/badge/lts
 [Stackage Nightly badge]: http://stackage.org/package/hslua-module-doclayout/badge/nightly