[Plugin: WP-FacebookConnect] How to Uninstall It completely

How do I uninstall this plugin completely?
I have added API key and activated the plugin but deactivated and removed the plugin…
but my WordPress is still getting hit coz of this plugin…
Any solution to remove this plugin completely??
A quick response would be appreciated..
My referral log showing something like:

http://facebook.com/extern/login_status.php?api_key=abrefwerd86279c1825&extern=0&channel=http%3A%2F%2Fshoutmeloud.com%2Ffacebook-rolled-out-friendship-page-feature.html%3Ffbc_channel%3D1&locale=en_US

http://wordpress.org/extend/plugins/wp-facebookconnect/