Dope Sheet - auto delete only "blue" keyframes

Hello. Is there any automatic way to remove only blue keyframes? I mean those that were created using the “Sample Keyframes” operator (Shift Alt O).
Or maybe it can be done with a script?
Thank you.

Select your two main keyframes between the sample keyframes and use select linked in graph editor. Then deselect the your two main keyframes and delete the selection. if you do it correctly, you will delete the breakdown ones you created.

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Thanks for the suggestion, may come in handy, but I found the following addon, which allows you to select and delete individual types of keyframes.