Docs: Remove @return void from various DocBlocks.

Per the documentation standards, it should not be used outside of the default bundled themes.

Follow-up to [52049], [52051], [53331], [54156], [54214], [55203], [55719].

See #57840.

git-svn-id: https://develop.svn.wordpress.org/trunk@55725 602fd350-edb4-49c9-b593-d223f7449a82

src/wp-includes/class-wp-theme-json-schema.php

@@ -138,8 +138,6 @@ class WP_Theme_JSON_Schema {
 	 *
 	 * @param array $settings Reference to the current settings array.
 	 * @param array $path Path to the property to be removed.
-	 *
-	 * @return void
 	 */
 	private static function unset_setting_by_path( &$settings, $path ) {
 		$tmp_settings = &$settings; // phpcs:ignore VariableAnalysis.CodeAnalysis.VariableAnalysis.UnusedVariable