I do not have a iPod. I keep seeing iTunesHelper set to automatically launch
iTunesHelper uses little or no resources, so should not affect the operation of your Mac. IIRC, it is only used by iTunes to connect iPods and whatnot, and is not used for any other purpose.
Control over the launch of iTunesHelper at login used to be controlled from System Preferences &gt; Users &amp; Groups &gt; Login Items tab:

If you see iTunesHelper in this list, select it, then click the minus [-] sign to remove it.
If you want to remove the app itself in iTunes 10.4 and later, it is found in the path /Applications/iTunes/Contents/MacOS/ which you can get to by right-clicking in the iTunes app to show its contents.
In iTunes 10.3 and earlier, iTunesHelper is found in /Applications/iTunes.app/Contents/Resources/