Error on dashboard login since update

I just updated all my plugins and themes and I get this error on login -

Warning: include(/home/str0ng/public_html/wp-content/plugins/form-maker/option.php) [function.include]: failed to open stream: No such file or directory in /home/str0ng/public_html/wp-config.php on line 60

Warning: include() [function.include]: Failed opening '/home/str0ng/public_html/wp-content/plugins/form-maker/option.php' for inclusion (include_path='.:disappointed:opt/php53/lib/php') in /home/str0ng/public_html/wp-config.php on line 60

I have deleted the plugin form maker and it is still on my login page.

Can you help?