Putting banner advertisements in the admin interface is unacceptable

I administer a WordPress network for a University with about 300 sites. I was appalled to find that a recent update of this plugin snuck a banner advertisement into the WordPress admin dashboard (the top of the plugins page). Advertisements within the plugin’s own settings pages are sort of okay, but this crosses the line.

I am considering removing the plugin from our network, but first I have to inventory which sites are actually using the widget and manually configure a replacement.

For now at least, I was able to add the following code to a custom plugin.

function remove_spam_social_widget_notice() {
	if ( function_exists( 'socialwidget_global_notice' ) ) {
		remove_action( 'admin_notices', 'socialwidget_global_notice');
	}
}
add_action('admin_notices', 'remove_spam_social_widget_notice', 9);

function remove_spam_social_widget_menu() {
	if ( function_exists( 'socialwidget_top_level_menu' ) ) {
		remove_action( 'admin_menu', 'socialwidget_top_level_menu' );
	}
}
add_action('admin_menu', 'remove_spam_social_widget_menu', 9);