Limit timeline dropdown to frameworks tested in a year

[p8]

The timeline page can take a couple of seconds to respond:
curl https://tfb-status.techempower.com/timeline/<framework>/<test>
As this only loads the initial page so there is no Javascript requesting JSON, I suspect most time is spend rendering the dropdown with the frameworks.
I don't know how this dropdown is generated, but maybe the dropdown can be limited to only show frameworks tested in the last year, instead of the 10+ years?

[joanhey]

Any benefit is for all the frameworks !!