Mynde-
I assumed it wouldn't be that big of an issue since it only turns on when you click in the top righthand corner of the window and then turns off when you click in the top lefthand corner of the window, and I didn't notice any performance degradation because I used the same files that are normally used to load the class animations into memory.
However, if you do want to remove it altogether, I just created a new lodidodi_classanim.xml file that you can download *here*. (
Edit: For some reason the direct link to the file wasn't working from within this post. You will have to go to http://www.lodidodi.net, and scroll down to "Optional Downloads" then click the link for "Blank Easter Egg".) If you unzip this file and copy it into your UI directory (overwriting the existing lodidodi_classanim.xml file), then the easter egg will no longer be accessible.
Sorry if this was a problem,
Lodi Dodi