Remove broken buttons.

Author: tompollard

README.md

@@ -2,10 +2,8 @@
 
 ![signals](https://raw.githubusercontent.com/MIT-LCP/wfdb-python/main/demo-img.png)
 
-[![tests workflow](https://github.com/MIT-LCP/wfdb-python/actions/workflows/run-tests.yml/badge.svg)](https://github.com/MIT-LCP/wfdb-python/actions?query=workflow%3Arun-tests+event%3Apush+branch%3Amain)
 [![PyPI Downloads](https://img.shields.io/pypi/dm/wfdb.svg?label=PyPI%20downloads)](https://pypi.org/project/wfdb/)
 [![PhysioNet Project](https://img.shields.io/badge/DOI-10.13026%2Fegpf--2788-blue)](https://doi.org/10.13026/egpf-2788)
-[![Supported Python Versions](https://img.shields.io/pypi/pyversions/wfdb.svg)](https://pypi.org/project/wfdb)
 
 ## Introduction