Update README.md

Author: ManukMinasyan

README.md

@@ -8,7 +8,6 @@
 [![Version](https://img.shields.io/npm/v/vue-functional-calendar.svg)](https://www.npmjs.com/package/vue-functional-calendar)
 [![Software License](https://img.shields.io/badge/license-MIT-brightgreen.svg?style=flat-square)](LICENSE)
 [![Downloads](https://img.shields.io/npm/dt/vue-functional-calendar.svg)](https://www.npmjs.com/package/vue-functional-calendar)
-![gzip size](https://img.shields.io/badge/gzip%20size-5.73%20kB-44cc11.svg)
 ___
 
 ## Demo