sudo cnfiguration

[Todd C. Miller]

Sudo asks the user for a password because that's what it is supposed
to do.  Sudo came out of an environment where people often worked
in open labs where there was little to no physical security.
Thus you don't want someone to grab your terminal and do rootly
things while you are off to grab a soda.

To disable the password stuff simply put the following at the top of
your sudoers file:

Defaults	!authenticate

and that will prevent sudo from trying to authenticate users.

 - todd