Remove outdated information from mobx-react README

[kubk]

Since we only support mobx-react 7+ I've removed confusing information from the README. I've removed the comparison table completely because there is nothing to choose from. Only the latest version is maintained.

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Latest commit: 1a591cc

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[urugator]

Thank you for the PR. I think the version table can still prove useful/relevant, there seems to be quite a few users still using mobx 5 or even 4. Perhaps just change the title to "Compatibility matrix" and add something like:
"Only the latest version is actively maintained. If you're missing a fix or a feature in older version, consider upgrading or using patch-package"

[kubk]

@urugator Agreed, done 👍

[kubk]

Hi @urugator

Since it's just a README change I think we can merge it without waiting for CI. Thanks

[urugator]

Since it's just a README change I think we can merge it without waiting for CI. Thanks

I don't have permissions to merge unless it's all green.

[mweststrate]

merge overriden, I see if I can uninstall netlify, I suspended it, not sure why taht isn't enough