WordPress - Remove useless registered image sizes

functions.php

<?php
/**
 * Hooked into `intermediate_image_sizes` filter hook.
 *
 * @param array $image_sizes
 *
 * @return  array
 */
function ss_unset_intermediate_image_sizes( $image_sizes ) {
	$bad_sizes = array(
		array_search( 'medium_large', $image_sizes ), // Returns the key which contains the 'medium_large' value.
		array_search( 'shop_catalog', $image_sizes ),
		array_search( 'shop_single', $image_sizes ),
		array_search( 'shop_thumbnail', $image_sizes ),
	);

	foreach ( $bad_sizes as $size_key ) {
		if ( $size_key === false ) {
			continue;
		}

		unset( $image_sizes[ $size_key ] );
	}

	/**
	 * Also, try to unregister additional image sizes.
	 */
	global $_wp_additional_image_sizes;

	if ( isset( $_wp_additional_image_sizes ) && is_array( $_wp_additional_image_sizes ) ) {
		if ( isset( $_wp_additional_image_sizes['shop_catalog'] ) ) {
			unset( $_wp_additional_image_sizes['shop_catalog'] );
		}

		if ( isset( $_wp_additional_image_sizes['shop_single'] ) ) {
			unset( $_wp_additional_image_sizes['shop_single'] );
		}

		if ( isset( $_wp_additional_image_sizes['shop_thumbnail'] ) ) {
			unset( $_wp_additional_image_sizes['shop_thumbnail'] );
		}
	}

	return $image_sizes;
}

/**
 * @link    https://developer.wordpress.org/reference/hooks/intermediate_image_sizes/
 * @see     ss_unset_intermediate_image_sizes()
 */
add_filter( 'intermediate_image_sizes', 'ss_unset_intermediate_image_sizes', 999 );