Code Quality: Remove unnecessary array check for value return in WP_Theme_JSON::get_property_value().

Developed in https://github.com/WordPress/wordpress-develop/pull/10928

Follow-up to https://github.com/WordPress/gutenberg/commit/ccd529d7a6af

Props soean, mukesh27, westonruter.
Fixes #64636.

Built from https://develop.svn.wordpress.org/trunk@61640


git-svn-id: http://core.svn.wordpress.org/trunk@60951 1a063a9b-81f0-0310-95a4-ce76da25c4cd

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

@@ -2559,10 +2559,6 @@ class WP_Theme_JSON {
 			}
 		}
 
-		if ( is_array( $value ) ) {
-			return $value;
-		}
-
 		return $value;
 	}
 

wp-includes/version.php

@@ -16,7 +16,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '7.0-alpha-61639';
+$wp_version = '7.0-alpha-61640';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.