Editor: Remove TinyMCE global version.

The global variable is not being used in the `editor_settings` method. 

Fixes #45398.
Props ishitaka, noisysocks, mista-flo.



git-svn-id: https://develop.svn.wordpress.org/trunk@47860 602fd350-edb4-49c9-b593-d223f7449a82

src/wp-includes/class-wp-editor.php

@@ -310,14 +310,10 @@ final class _WP_Editors {
 	/**
 	 * @since 3.3.0
 	 *
-	 * @global string $tinymce_version
-	 *
 	 * @param string $editor_id Unique editor identifier, e.g. 'content'.
 	 * @param array  $set       Array of editor arguments.
 	 */
 	public static function editor_settings( $editor_id, $set ) {
-		global $tinymce_version;
-
 		if ( empty( self::$first_init ) ) {
 			if ( is_admin() ) {
 				add_action( 'admin_print_footer_scripts', array( __CLASS__, 'editor_js' ), 50 );