Remove myself as maintainer

Author: paf31

README.md

@@ -2,7 +2,6 @@
 
 [![Latest release](http://img.shields.io/github/release/purescript-contrib/purescript-parsing.svg)](https://github.com/purescript/purescript-parsing/releases)
 [![Build status](https://travis-ci.org/purescript-contrib/purescript-parsing.svg?branch=master)](https://travis-ci.org/purescript-contrib/purescript-parsing)
-[![Maintainer: paf31](https://img.shields.io/badge/maintainer-paf31-lightgrey.svg)](http://github.com/paf31)
 
 A parser combinator library based on Haskell's Parsec.