revert broken links etc.

WillGibson · WillGibson · commit f29920a27a83 · 2025-05-24T10:15:20.000+01:00
diff --git a/README.md b/README.md
@@ -17,9 +17,6 @@ poetry run pytest
 ## Metrics
 
 - [Codecov](https://app.codecov.io/gh/WillGibson/python-sandpit)
-- [CodecovXX](https://app.codXXecov.io/gh/WillGibson/python-sandpit)
-- [good heading](#python-sandpit)
-- [bad heading](#pythonXX-sandpit)
 
 ## Mutation testing
 
