I used .htaccess to remove the file extensions on my webpage. I have deleted htaccess on my root folder on my website but a url like www.mywebsite.com/dashboard rewrites to www.mywebsite.com/dashboard.php
Is there anyway that the web server has cached the .htaccess file?
No it is because of MultiViews:
Options MultiViews
Try adding this line in your .htaccess to stop this behavior:
Options -MultiViews