REST API: Remove misleading comment in WP_REST_Blocks_Controller->get_item_schema.

In r56093 schema caching was added above a comment instructing developers not to cache that controller's schema. However, there is no obvious penalty for re-caching 
schema that is partially derived from a parent.

Caching schema in the same way in every controller is beneficial consistency, and discussion at WCUS2023 contributor day concluded we could remove this comment.

Props ahardyjpl, davidbinda, johnjamesjacoby, TimothyBlynJacobs, kadamwhite.
Fixes #59193.
See #58657.




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git-svn-id: http://core.svn.wordpress.org/branches/6.3@56293 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-includes/rest-api/endpoints/class-wp-rest-blocks-controller.php

@@ -75,7 +75,6 @@ class WP_REST_Blocks_Controller extends WP_REST_Posts_Controller {
 			return $this->add_additional_fields_schema( $this->schema );
 		}
 
-		// Do not cache this schema because all properties are derived from parent controller.
 		$schema = parent::get_item_schema();
 
 		/*

wp-includes/version.php

@@ -16,7 +16,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '6.3.2-alpha-56779';
+$wp_version = '6.3.2-alpha-56781';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.