remove badges that are no longer accurate or in use

README.md

@@ -3,7 +3,7 @@
 A <abbr title="Test Anything Protocol">TAP</abbr> test framework for
 Node.js.
 
-[![Build Status](https://travis-ci.org/tapjs/node-tap.svg?branch=master)](https://travis-ci.org/tapjs/node-tap) [![Build Status](https://ci.appveyor.com/api/projects/status/913p1ypf21gf4leu?svg=true)](https://ci.appveyor.com/project/isaacs/node-tap) [![Coverage Status](https://coveralls.io/repos/tapjs/node-tap/badge.svg?branch=master&service=github)](https://coveralls.io/github/tapjs/node-tap?branch=master)
+[![Build Status](https://travis-ci.org/tapjs/node-tap.svg?branch=master)](https://travis-ci.org/tapjs/node-tap)
 
 _Just wanna see some code? [Get started!](http://www.node-tap.org/basics/)_