Remove code to ensure tinymce save

PR: WordPress/gutenberg#12568
File: https://github.com/WordPress/gutenberg/blob/master/packages/edit-post/src/store/actions.js#L333

js/wysiwyg.js

@@ -138,24 +138,6 @@
 			.find( '.quicktags-toolbar' ).attr( 'id', 'qt_' + id + '_toolbar' ).html( '' );
 	}
 
-	/**
-	 * Handles updating tiny mce instances when saving a gutenberg post.
-	 * https://metabox.io/support/topic/data-are-not-saved-into-the-database/
-	 * https://github.com/WordPress/gutenberg/issues/7176
-	 */
-	function ensureSave() {
-		if ( !wp.data || !wp.data.hasOwnProperty( 'subscribe' ) || !window.tinyMCE ) {
-			return;
-		}
-		wp.data.subscribe( function() {
-			var editor = wp.data.hasOwnProperty( 'select' ) ? wp.data.select( 'core/editor' ) : {};
-
-			if ( editor && editor.isSavingPost && editor.isSavingPost() ) {
-				window.tinyMCE.triggerSave();
-			}
-		} );
-	}
-
 	function init( e ) {
 		$( e.target ).find( '.rwmb-wysiwyg' ).each( transform );
 	}
@@ -167,7 +149,6 @@
 		}, 0 );
 	} );
 
-	ensureSave();
 	rwmb.$document
 		.on( 'mb_blocks_edit', init )
 		.on( 'mb_init_editors', init )