misc(rn): Remove out dated cocoapods install guide

[krystofwoldrich]

Manual linking is rarely used, and this page lacks much context.

Plus the content of this page is included in https://docs.sentry.io/platforms/react-native/manual-setup/manual-setup/

• How can I redirect https://docs.sentry.io/platforms/react-native/install/cocoapods/ to https://docs.sentry.io/platforms/react-native/manual-setup/manual-setup/?

[vercel]

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Name	Status	Preview	Comments	Updated (UTC)
sentry-docs	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Mar 15, 2024 9:08am

[kahest]

@krystofwoldrich see here on how to create a redirect:

sentry-docs/docs/contributing/pages/redirects.mdx

Line 11 in bd239ff

Redirects are configured in [`next.config.js`](https://github.com/getsentry/sentry-docs/blob/master/next.config.js) and are checked before the filesystem (including pages and `/public` files ). The `redirects` function returns an array holding redirect objects.

[codecov]

Bundle Report

Changes will decrease total bundle size by 378 bytes ⬇️

Bundle name	Size	Change
sentry-docs-server	5.96MB	372 bytes ⬇️
sentry-docs-edge-server	3.47kB	0 bytes
sentry-docs-client	5.52MB	6 bytes ⬇️