Remove travis from build.

Author: marc0der

.travis.yml

@@ -1,7 +1,6 @@
 # SDKMAN! CLI
 ### The Software Development Kit Manager Command Line Interface
 
-[![Build Status](https://travis-ci.org/sdkman/sdkman-cli.svg?branch=master)](https://travis-ci.org/sdkman/sdkman-cli)
 [![Backers on Open Collective](https://opencollective.com/sdkman/backers/badge.svg)](#backers) 
 [![Sponsors on Open Collective](https://opencollective.com/sdkman/sponsors/badge.svg)](#sponsors)
 [![Slack](https://slack.sdkman.io/badge.svg)](https://slack.sdkman.io)