Sitemaps: Rename wp_get_sitemaps() to wp_get_sitemaps_providers()

Following [48536], rename the function to match the rest of the sitemaps logic.

Also eliminates some dead code after [48523].

Props pbiron.
See #50724. See #50643.

git-svn-id: https://develop.svn.wordpress.org/trunk@48540 602fd350-edb4-49c9-b593-d223f7449a82

src/wp-includes/sitemaps.php

@@ -22,8 +22,6 @@
 function wp_sitemaps_get_server() {
 	global $wp_sitemaps;
 
-	$is_enabled = (bool) get_option( 'blog_public' );
-
 	// If there isn't a global instance, set and bootstrap the sitemaps system.
 	if ( empty( $wp_sitemaps ) ) {
 		$wp_sitemaps = new WP_Sitemaps();
@@ -51,13 +49,8 @@ function wp_sitemaps_get_server() {
  *
  * @return WP_Sitemaps_Provider[] Array of sitemap providers.
  */
-function wp_get_sitemaps() {
+function wp_get_sitemaps_providers() {
 	$sitemaps = wp_sitemaps_get_server();
-
-	if ( ! $sitemaps ) {
-		return array();
-	}
-
 	return $sitemaps->registry->get_providers();
 }
 
@@ -72,11 +65,6 @@ function wp_get_sitemaps() {
  */
 function wp_register_sitemap( $name, WP_Sitemaps_Provider $provider ) {
 	$sitemaps = wp_sitemaps_get_server();
-
-	if ( ! $sitemaps ) {
-		return false;
-	}
-
 	return $sitemaps->registry->add_provider( $name, $provider );
 }
 

src/wp-includes/sitemaps/class-wp-sitemaps-registry.php

@@ -49,7 +49,7 @@ class WP_Sitemaps_Registry {
 	 * @since 5.5.0
 	 *
 	 * @param string $name Sitemap provider name.
-	 * @return WP_Sitemaps_Provider|null Sitemaps provider if it exists, null otherwise.
+	 * @return WP_Sitemaps_Provider|null Sitemap provider if it exists, null otherwise.
 	 */
 	public function get_provider( $name ) {
 		if ( ! isset( $this->providers[ $name ] ) ) {