Hubs/Scopes Merge 42 - Remove `Hub`

[adinauer]

#skip-changelog

:scroll: Description

Remove Hub class as it's no longer being used. Byebye 👋 .

:bulb: Motivation and Context

:green_heart: How did you test it?

:pencil: Checklist

• [ ] I reviewed the submitted code.
• [ ] I added tests to verify the changes.
• [ ] No new PII added or SDK only sends newly added PII if sendDefaultPII is enabled.
• [ ] I updated the docs if needed.
• [ ] Review from the native team if needed.
• [ ] No breaking change or entry added to the changelog.
• [ ] No breaking change for hybrid SDKs or communicated to hybrid SDKs.

:crystal_ball: Next steps

[github-actions[bot]]

	Messages
:book:	Do not forget to update Sentry-docs with your feature once the pull request gets approved.

Generated by :no_entry_sign: dangerJS against edb7a6af2e5886cc7b8b7b5db913737111494f2b

[github-actions[bot]]

Performance metrics :rocket:

	Plain	With Sentry	Diff
Startup time	381.68 ms	472.85 ms	91.17 ms
Size	1.70 MiB	2.28 MiB	595.65 KiB

Previous results on branch: feat/hsm-42-remove-hub

Startup times

Revision	Plain	With Sentry	Diff
54a9cb5ab325f04b7e892a6ce97a74f7d719f2b9	426.14 ms	492.98 ms	66.84 ms

App size

Revision	Plain	With Sentry	Diff
54a9cb5ab325f04b7e892a6ce97a74f7d719f2b9	1.70 MiB	2.28 MiB	595.65 KiB