Refactor: Remove unnecessary false check in oEmbed data fetching

[Soean]

This pull request makes a small change to the get_data method in class-wp-oembed.php, simplifying the method by removing an unnecessary conditional check before returning the fetched data.

Trac ticket: https://core.trac.wordpress.org/ticket/64784

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This Pull Request is for code review only. Please keep all other discussion in the Trac ticket. Do not merge this Pull Request. See GitHub Pull Requests for Code Review in the Core Handbook for more details.

[github-actions]

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Props soean, swissspidy, ocean90.

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[github-actions]

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[github-actions]

A commit was made that fixes the Trac ticket referenced in the description of this pull request.

SVN changeset: 61797
GitHub commit: c6c1256

This PR will be closed, but please confirm the accuracy of this and reopen if there is more work to be done.