remove travis

Author: rfscholte

README.md

@@ -1,5 +1,3 @@
-[![Build Status](https://travis-ci.org/codehaus-plexus/plexus-testing.svg?branch=master)](https://travis-ci.org/codehaus-plexus/plexus-testing)
-
 Plexus testing:
 
  * [![Maven Central](https://img.shields.io/maven-central/v/org.codehaus.plexus/plexus-testing.svg?label=Maven%20Central)](http://search.maven.org/#search%7Cga%7C1%7Cg%3A%22org.codehaus.plexus%22%20a%3A%22plexus-testing%22)