fix: remove extraneous param from remove_filter() calls

[justlevine]

What?

This PR fixes several calls to remove_filter(), where an invalid 4th parameter is passed.

(Unlike add_filter(), remove_filter() does not take $accepted_args )

Why?

While this issue was surfaced by PHPStan (via #66693) it can be remediated independently as part of #66598

How?

Testing Instructions

Testing Instructions for Keyboard

Screenshots or screencast

[github-actions]

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[github-actions]

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[github-actions]

👋 Thanks for your first Pull Request and for helping build the future of Gutenberg and WordPress, @justlevine! In case you missed it, we'd love to have you join us in our Slack community.

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[gziolo]

Thank you for catching it and the fix 👍🏻