Remove newsletter badge

Author: thinkingserious

README.md

@@ -3,7 +3,6 @@
 [![Travis Badge](https://travis-ci.com/sendgrid/sendgrid-python.svg?branch=main)](https://travis-ci.com/sendgrid/sendgrid-python)
 [![codecov](https://img.shields.io/codecov/c/github/sendgrid/sendgrid-python/main.svg?style=flat-square&label=Codecov+Coverage)](https://codecov.io/gh/sendgrid/sendgrid-python)
 [![Docker Badge](https://img.shields.io/docker/automated/sendgrid/sendgrid-python.svg)](https://hub.docker.com/r/sendgrid/sendgrid-python/)
-[![Email Notifications Badge](https://dx.sendgrid.com/badge/python)](https://dx.sendgrid.com/newsletter/python)
 [![MIT licensed](https://img.shields.io/badge/license-MIT-blue.svg)](LICENSE)
 [![Twitter Follow](https://img.shields.io/twitter/follow/sendgrid.svg?style=social&label=Follow)](https://twitter.com/sendgrid)
 [![GitHub contributors](https://img.shields.io/github/contributors/sendgrid/sendgrid-python.svg)](https://github.com/sendgrid/sendgrid-python/graphs/contributors)