Remove html.elements.video.intrinsicsize from BCD (#15998)
Remove html.elements.video.intrinsicsize from BCD (#15998)

This PR removes the irrelevant `intrinsicsize` member of the `video` HTML element as per the corresponding [data guidelines](https://github.com/mdn/browser-compat-data/blob/main/docs/data-guidelines.md#removal-of-irrelevant-features). This was only supported in Chromium behind flags removed over two years ago.
mdn/browser-compat-data,chrisdavidmills/browser-compat-data,mdn/browser-compat-data,chrisdavidmills/browser-compat-data