Deprecation Removals

As part of this major version, a number of previously deprecated props, arugments, methods, etc. have been removed. Additionally there have been some changes to things that are only used internally, or only used very rarely. It's highly unlikely that any given app will encounter any of these items, but they are all breaking changes, so they have all been documented below.

<Callout type='info'> For this section more than any other one, please use the CLI upgrade tool (`npx @clerk/upgrade`). Changes in this section are very unlikely to appear in your codebase, the tool will save time looking for them. </Callout>