Removed getStaticDirectory()

[mjh316]

Please don't delete this checklist! Before submitting the PR, please make sure you do the following:

• It's really useful if your PR references an issue where it is discussed ahead of time. In many cases, features are absent for a reason. For large changes, please create an RFC: https://github.com/sveltejs/rfcs
• This message body should clearly illustrate what problems it solves.
• Ideally, include a test that fails without this PR but passes with it.

Removes getStaticDirectory() because of no more usage, as stated in #7800.

Tests

• Run the tests with pnpm test and lint the project with pnpm lint and pnpm check

Changesets

• If your PR makes a change that should be noted in one or more packages' changelogs, generate a changeset by running pnpm changeset and following the prompts. All changesets should be patch until SvelteKit 1.0

[changeset-bot]

🦋 Changeset detected

Latest commit: 1a22ec3

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 1 package

Name	Type
@sveltejs/kit	Patch

Not sure what this means? Click here to learn what changesets are.

Click here if you're a maintainer who wants to add another changeset to this PR

[mjh316]

It seems svelte-adapter-firebase has one usage.
Other than that, all the adapters on https://sveltesociety.dev/components#adapters do not use it.

[dummdidumm]

Thank you! We should ask them for what exactly they need it and if they can use something else to achieve what they want before merging this.

[benmccann]

@jthegedus it would be interesting to get your input on this PR. thanks!

[jthegedus]

We are using this in the Firebase adapter to resolve #587 in our own way, but I believe we can work around it regardless. I need to do a big update/rewrite of the adapter now a lot of things have changed in Firebase and Kit.

Thanks for the consideration Ben 🙏

[Rich-Harris]

thank you!

[benmccann]

@jthegedus I was just reading your comment (#587 (comment)) on that issue to make sure we didn't cause you any trouble by merging this. What I would recommend is copying the assets from the output directory. The output directory will contain both the generated application files and assets from the static directory which should probably all be served by the CDN as they'll all static assets. Let me know if that would work or if there's anything I can do otherwise to help you get things running on the latest version of SvelteKit