Update unit tests

phpunit/class-wp-rest-global-styles-controller-gutenberg-test.php

@@ -86,7 +86,7 @@ public function test_register_routes() {
 			'Single global style based on the given ID route does not exist'
 		);
 		$this->assertCount(
-			4, // Double core because both sets get registered in the plugin.
+			2,
 			$routes['/wp/v2/global-styles/(?P<id>[\/\w-]+)'],
 			'Single global style based on the given ID route does not have exactly two elements'
 		);
@@ -96,7 +96,7 @@ public function test_register_routes() {
 			'Theme global styles route does not exist'
 		);
 		$this->assertCount(
-			2, // Double core because both sets get registered in the plugin.
+			1,
 			$routes['/wp/v2/global-styles/themes/(?P<stylesheet>[^\/:<>\*\?"\|]+(?:\/[^\/:<>\*\?"\|]+)?)'],
 			'Theme global styles route does not have exactly one element'
 		);