Removing LGTM as the service is going offline shortly (#2335)

Author: chayim

README.md

@@ -3,7 +3,6 @@
 [![Tests](https://img.shields.io/github/workflow/status/redis/node-redis/Tests/master.svg?label=tests)](https://github.com/redis/node-redis/actions/workflows/tests.yml)
 [![Coverage](https://codecov.io/gh/redis/node-redis/branch/master/graph/badge.svg?token=xcfqHhJC37)](https://codecov.io/gh/redis/node-redis)
 [![License](https://img.shields.io/github/license/redis/node-redis.svg)](https://github.com/redis/node-redis/blob/master/LICENSE)
-[![LGTM alerts](https://img.shields.io/lgtm/alerts/g/redis/node-redis.svg?logo=LGTM)](https://lgtm.com/projects/g/redis/node-redis/alerts)
 
 [![Discord](https://img.shields.io/discord/697882427875393627.svg?style=social&logo=discord)](https://discord.gg/redis)
 [![Twitch](https://img.shields.io/twitch/status/redisinc?style=social)](https://www.twitch.tv/redisinc)