[readme] remove stats badge until PyPI is fixed

see pypi issue: https://status.python.org/incidents/2jj696st6yn5

README.md

@@ -2,7 +2,11 @@
 [![PyPI version](https://badge.fury.io/py/deepspeed.svg)](https://pypi.org/project/deepspeed/)
 [![Documentation Status](https://readthedocs.org/projects/deepspeed/badge/?version=latest)](https://deepspeed.readthedocs.io/en/latest/?badge=latest)
 [![License MIT](https://img.shields.io/badge/License-MIT-blue.svg)](https://github.com/Microsoft/DeepSpeed/blob/master/LICENSE)
+
+<!--
+Remove until pypi issue is resolved: https://status.python.org/incidents/2jj696st6yn5
 [![Downloads](https://pepy.tech/badge/deepspeed/month)](https://pepy.tech/project/deepspeed)
+-->
 
 ### DeepSpeed+Megatron trained the world's most powerful language model: [MT-530B](https://www.microsoft.com/en-us/research/blog/using-deepspeed-and-megatron-to-train-megatron-turing-nlg-530b-the-worlds-largest-and-most-powerful-generative-language-model/)