Jetpack: remove External Media from the block editor

The Jetpack plugin comes with a number of blocks and editor extensions. One of those features extends the existing Media blocks, and adds an option to find and upload images from Google Photos or Pexels:

While this can be super useful when you use Google Photos or need to find free stock photos for your posts, you may sometimes prefer to only see the default “Media Library” option.

To do so, you can add the following snippet to a functionality plugin on your site:

/**
 * Remove Jetpack's External Media feature.
 *
 * @see https://wordpress.org/support/topic/remove-external-image-sources-from-add-media-2/
 */
add_filter(
	'jetpack_tools_to_include',
	function ( $tools ) {
		$index = array_search( 'external-media/external-media.php', $tools, true );
		if ( $index ) {
			unset( $tools[ $index ] );
		}
		return $tools;
	}
);