Coding Standards: Remove superfluous blank lines at the end of various classes.

Note: This is enforced by WPCS 3.0.0.

Follow-up to [56536].

Props jrf.
See #59161, #58831.

git-svn-id: https://develop.svn.wordpress.org/trunk@56547 602fd350-edb4-49c9-b593-d223f7449a82

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

@@ -69,5 +69,4 @@ class WP_Theme_JSON_Data {
 	public function get_data() {
 		return $this->theme_json->get_raw_data();
 	}
-
 }