Removed broken repo size badge

Author: aashish24

README.md

@@ -2,7 +2,6 @@ uvcdat
 ======
 [![build status](https://travis-ci.org/UV-CDAT/uvcdat.svg?branch=release)](https://travis-ci.org/UV-CDAT/uvcdat/builds)
 [![stable version](http://img.shields.io/badge/stable version-2.4.0-brightgreen.svg)](https://github.com/UV-CDAT/uvcdat/releases/tag/2.4.0)
-![repo size](https://reposs.herokuapp.com/?path=UV-CDAT/uvcdat)
 ![platforms](http://img.shields.io/badge/platforms-linux | osx-lightgrey.svg)
 [![DOI](https://zenodo.org/badge/doi/10.5281/zenodo.45136.svg)](http://dx.doi.org/10.5281/zenodo.45136)