feat: Remove codebeat badge from README

Author: hsluoyz

README.md

@@ -5,7 +5,6 @@ Redis Watcher
 ![License](https://img.shields.io/github/license/jcasbin/redis-watcher)
 [![Javadoc](https://javadoc.io/badge2/org.casbin/jcasbin-redis-watcher/javadoc.svg)](https://javadoc.io/doc/org.casbin/jcasbin-redis-watcher)
 [![codecov](https://codecov.io/gh/jcasbin/redis-watcher/branch/master/graph/badge.svg?token=ENt9xr4nFg)](https://codecov.io/gh/jcasbin/redis-watcher)
-[![codebeat badge](https://codebeat.co/badges/8b3da1c4-3a61-4123-a3d4-002b2598a297)](https://codebeat.co/projects/github-com-jcasbin-redis-watcher-master)
 [![Maven Central](https://img.shields.io/maven-central/v/org.casbin/jcasbin-redis-watcher.svg)](https://mvnrepository.com/artifact/org.casbin/jcasbin-redis-watcher/latest)
 [![Release](https://img.shields.io/github/release/jcasbin/redis-watcher.svg)](https://github.com/jcasbin/redis-watcher/releases/latest)
 [![Discord](https://img.shields.io/discord/1022748306096537660?logo=discord&label=discord&color=5865F2)](https://discord.gg/S5UjpzGZjN)