Source

File: wp-admin/includes/upgrade.php

function maybe_disable_automattic_widgets() {
	$plugins = __get_option( 'active_plugins' );

	foreach ( (array) $plugins as $plugin ) {
		if ( 'widgets.php' === basename( $plugin ) ) {
			array_splice( $plugins, array_search( $plugin, $plugins, true ), 1 );
			update_option( 'active_plugins', $plugins );
			break;
		}
	}
}