Remove Travis CI badge from README (#472)

56ab933#diff-d50e69bd6199d6bb04c726d9b3da9a0bbbd5731ad3ef6500f42e07ff10fb98a9

Co-authored-by: Viktor Szépe <[email protected]>

README.md

@@ -1,7 +1,6 @@
 [![Latest Version](https://poser.pugx.org/thecodingmachine/safe/v/stable.svg)](https://packagist.org/packages/thecodingmachine/safe)
 [![Total Downloads](https://poser.pugx.org/thecodingmachine/safe/downloads.svg)](https://packagist.org/packages/thecodingmachine/safe)
 [![License](https://poser.pugx.org/thecodingmachine/safe/license.svg)](https://packagist.org/packages/thecodingmachine/safe)
-[![Build Status](https://travis-ci.org/thecodingmachine/safe.svg?branch=master)](https://travis-ci.org/thecodingmachine/safe)
 [![Continuous Integration](https://github.com/thecodingmachine/safe/workflows/Continuous%20Integration/badge.svg)](https://github.com/thecodingmachine/safe/actions)
 [![codecov](https://codecov.io/gh/thecodingmachine/safe/branch/master/graph/badge.svg)](https://codecov.io/gh/thecodingmachine/safe)