drop appvyierosro badge

Author: orsinium

README.md

@@ -1,7 +1,6 @@
 ## Dephell Specifier
 
 [![travis](https://travis-ci.org/dephell/dephell_specifier.svg?branch=master)](https://travis-ci.org/dephell/dephell_specifier)
-[![appveyor](https://ci.appveyor.com/api/projects/status/github/dephell/dephell_specifier?svg=true)](https://ci.appveyor.com/project/orsinium/dephell-specifier)
 [![MIT License](https://img.shields.io/pypi/l/dephell-specifier.svg)](https://github.com/dephell/dephell_specifier/blob/master/LICENSE)
 
 Work with version specifiers.