By default, WordPress always keeps an eye that whether there is any new plugin update is available of not and if it is available, it will notifies you. If in case, such a thing irritates you, then pasting the following snippet will let you be able to disable plugins update in your WordPress blog.
1 2 | remove_action( 'load-update-core.php', 'wp_update_plugins' ); add_filter( 'pre_site_transient_update_plugins', create_function( '$a', "return null;" ) ); |
Snippet Source/Credit: WP Snippets