If you mean by "removing entries", that you want to have only the icons for some options in screen, like for example only Harmattan and Nitdroid, and remove everything else, then it is easy.

• 1.) download the source toolkit; "svn co https://toosa.swagman.org/svn/animatronics" or in case you cannot resolve IP address of toosa (as seems to happen sometimes) then do "svn co https://88.115.66.252/svn/animatronics" instead.
• 2.) edit the file "create_animations.sh" so that you replace the icon file definitions on rows 33...40 of the icons you do not need by "empty_200x200.png" (it is as name says, an empty icon, not showing on screen)
• 3.) edit the file "menuscripts/animated_menu_top.map" so that you comment out the wanted touch map (lines 19...26) by putting a #-mark in the beginning of the lines.
• 4.) compile the new archive by running the script "./create_animations.sh"
• 5.) pack the archive to cpio by command "./pack_cpio.sh --create animatronics.tar"

That's all you need to do really, no need to modify ubiboot.conf unless you want to add or remove kernels.

If you want to have more than one CPIO available in your device, you can rename your freshly created "ubiboot-02.menus.cpio" to something else, and then put that name in the definition line "G_UBIBOOT_ARCHIVE=" of your ubiboot.conf but that is not necessary really.

(BTW there is also the README file in the animatronics subdirectory, which tells you pretty much this same thing )