remove: remove utils/some-own-by

This commit removes `@stdlib/utils/some-own-by` in favor of
`@stdlib/object/some-own-by`.

BREAKING CHANGE: remove `utils/some-own-by`

To migrate, users should update their require/import paths to use
`@stdlib/object/some-own-by` which provides the same API and implementation.

Ref: #7374

Author: Neerajpathak07