🙈 remove legacy text

Author: jonasvdd

README.md

@@ -179,13 +179,6 @@ The paper about the plotly-resampler toolkit itself (preprint): https://arxiv.or
   code: https://github.com/predict-idlab/MinMaxLTTB
 
 
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-## Future work 🔨
-
-- [x] Support `.add_traces()` (currently only `.add_trace` is supported)
-- [x] Support `hf_color` and `hf_markersize`, see [#148](https://github.com/predict-idlab/plotly-resampler/pull/148)
-- [x] Integrate with [tsdownsample](https://github.com/predict-idlab/tsdownsample) :racehorse:
-
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