Remove the legacy buddybuild status indicator from the README

Author: 0nko

README.md

@@ -1,7 +1,6 @@
 <h1><img align="center" width=50px height=50px src="https://github.com/wordpress-mobile/AztecEditor-iOS/raw/develop/RepoAssets/aztec.png" alt="Aztec Logo"/>&nbsp;Aztec: Native HTML Editor for Android</h1>
 
 [![Build Status](https://travis-ci.org/wordpress-mobile/AztecEditor-Android.svg?branch=develop)](https://travis-ci.org/wordpress-mobile/AztecEditor-Android)
-[![BuddyBuild](https://dashboard.buddybuild.com/api/statusImage?appID=5800168c52aea90100a973ed&branch=develop&build=latest)](https://dashboard.buddybuild.com/apps/5800168c52aea90100a973ed/build/latest)
 
 Aztec (which extends EditText) is a rich-text editor component for writing HTML
 documents in Android.