Clear old data from `data.js`

I have a `data.js` [file with benchmark results](https://raw.githubusercontent.com/open-telemetry/opentelemetry-python/refs/heads/gh-pages/benchmarks/data.js)

There are some tests we don't run anymore. Is there any automated way to exclude them?

https://open-telemetry.github.io/opentelemetry-python/benchmarks/

They are rendered in this page. I want to keep the most recent ones, which are at the very bottom of the page