[8.x] Removes kbn-std/unset as it's not used anywhere (#193298) (#…

…193585)

# Backport

This will backport the following commits from `main` to `8.x`:
- [Removes kbn-std/unset as it's not used anywhere
(#193298)](#193298)

<!--- Backport version: 9.4.3 -->

### Questions ?
Please refer to the [Backport tool
documentation](https://github.com/sqren/backport)

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Meijering","email":"[email protected]"},"sourceCommit":{"committedDate":"2024-09-20T13:44:52Z","message":"Removes
kbn-std/unset as it's not used anywhere (#193298)\n\n##
Summary\r\n\r\nRemoves unset as it's not used anywhere. Underscore
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BACKPORT-->

Co-authored-by: Rudolf Meijering <[email protected]>

packages/kbn-std/index.ts

@@ -19,7 +19,6 @@ export type { URLMeaningfulParts } from './src/url';
 export { isRelativeUrl, modifyUrl, getUrlOrigin } from './src/url';
 export { isInternalURL } from './src/is_internal_url';
 export { parseNextURL } from './src/parse_next_url';
-export { unset } from './src/unset';
 export { getFlattenedObject } from './src/get_flattened_object';
 export { ensureNoUnsafeProperties } from './src/ensure_no_unsafe_properties';
 export {