you can use Root Explorer or Titanium Backup.
with Root Exp. (paid app) go to system>app>on top where it says Mount R/W tap it to R/O> press & hold the app you want & delete.
Titanium Backup (free app) go to Backup/Restore>tap the app & Un-install.

 

There are alternatives to Root Explorer that are free such as the excellent ES File Manger, works great with and without root access

 

Kool! you learn something new everyday, it pays to search for alternatives. i for one had Root Exp. on my last phone, paid for it thats why i still use it. Great tool if you are rooted. although i tried to remove Twitter, & facebook using RE, but it only remove the update, so i used Tibu, & rebooted phone it was finally gone. also you can use RE to change BootSound as well as the animation (when its safe to do so on this phone).