Remove update references from wordpress website

Functions.php

	// This function is designed to remove all mentions that updates are available.
	// Mostly because whereever there is a message, there is an update button allowing
	// you to update with a touch of a button. This might break the website completely!

			// Remove normall message
			add_action('admin_menu','wphidenag');
			function wphidenag() {
				remove_action( 'admin_notices', 'update_nag', 3 );
			}
			
			// Hide Button on widgets
			function remove_upgrade_nag() {
			   echo '<style type="text/css">
			           #wp-version-message .button {display: none}
			         </style>';
			}
			add_action('admin_head', 'remove_upgrade_nag');
			
			//hide plugin updates notification in the dashboard
			function hide_plugin_update_indicator(){
			    global $menu,$submenu;
			    $menu[65][0] = 'Plugins';
			    $submenu['index.php'][10][0] = 'Updates';
			}
			add_action('admin_menu', 'hide_plugin_update_indicator');