TinyMCE: Remove duplicate keys and strings from `langs/wp-langs-en.js`.

Props david.binda.
Fixes #49359.
Built from https://develop.svn.wordpress.org/trunk@47172


git-svn-id: http://core.svn.wordpress.org/trunk@46972 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-includes/js/tinymce/langs/wp-langs-en.js

@@ -501,9 +501,6 @@
 		css: "CSS Class",
 		adv_link_settings: "Advanced Link Settings",
 		link_rel: "Link Rel",
-		height: "Height",
-		orig_size: "Original Size",
-		css: "CSS Class",
 		s60: "60%",
 		s70: "70%",
 		s80: "80%",

wp-includes/version.php

@@ -13,7 +13,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '5.4-alpha-47171';
+$wp_version = '5.4-alpha-47172';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.