Error after Uninstalling W3 Total Cache

I recently switched from W3 Total Cache to WP Super Cache (mainly did this so that users don’t have the option to turn off caching). I deactivated the W3 Total Cache plugin and then thought I got all the W3 Total Cache files but am now getting this error in the backend when I update settings:

Warning: fopen(/home/splanky/public_html/wp-content/plugins/w3-total-cache/w3-total-cache.php) [function.fopen]: failed to open stream: No such file or directory in /home/splanky/public_html/wp-includes/functions.php on line 4165

Warning: fread(): supplied argument is not a valid stream resource in /home/splanky/public_html/wp-includes/functions.php on line 4168

Warning: fclose(): supplied argument is not a valid stream resource in /home/splanky/public_html/wp-includes/functions.php on line 4171