Delete @react-native/assets-registry

[huntie]

Summary:

@react-native/assets-registry has been deprecated since 0.87 (#57370), with two release cycles (0.87 and 0.88) ahead of its removal. Delete the package from the monorepo for 0.89.

Callers migrate as documented in the deprecation:

• @react-native/assets-registry/registry → AssetRegistry from react-native, or the react-native/asset-registry entry point.
• @react-native/assets-registry/path-support → @react-native/asset-utils.

Changelog: [General][Breaking] - Assets: Remove @react-native/assets-registry. Use AssetRegistry from react-native and @react-native/asset-utils instead.

Test Plan:

No remaining references to the package in the repo (excluding CHANGELOG*.md):

grep -rn --exclude-dir=node_modules --exclude-dir=.git 'assets-registry' . | grep -v CHANGELOG

✅ Jest for the packages that took over the package's functionality:

yarn test packages/asset-utils packages/react-native/Libraries/Image packages/community-cli-plugin/src/commands/bundle
# Test Suites: 6 passed, 6 total / Tests: 41 passed, 41 total

[meta-codesync]

@Abbondanzo has imported this pull request. If you are a Meta employee, you can view this in D122667835.