Removing Deprecated LGTM (#2473)

Author: chayim

README.md

@@ -8,7 +8,6 @@ The Python interface to the Redis key-value store.
 [![pypi](https://badge.fury.io/py/redis.svg)](https://pypi.org/project/redis/)
 [![pre-release](https://img.shields.io/github/v/release/redis/redis-py?include_prereleases&label=latest-prerelease)](https://github.com/redis/redis-py/releases)
 [![codecov](https://codecov.io/gh/redis/redis-py/branch/master/graph/badge.svg?token=yenl5fzxxr)](https://codecov.io/gh/redis/redis-py)
-[![Total alerts](https://img.shields.io/lgtm/alerts/g/redis/redis-py.svg?logo=lgtm&logoWidth=18)](https://lgtm.com/projects/g/redis/redis-py/alerts/)
 
 [Installation](#installation) |  [Usage](#usage) | [Advanced Topics](#advanced-topics) | [Contributing](https://github.com/redis/redis-py/blob/master/CONTRIBUTING.md)