These items are caused by entries in the \_ISO\MyE2B.cfg file.
You can play/remove the animation by pressing F2 when the E2B menu is displayed.
To remove the animation and boiler plate, edit the \_ISO\MyE2B.cfg file using Notepad and delete the STAMP1, ANIMFD3 and ANIMATE lines:
- set ANIMFD3=/_ISO/docs/Templates/Animate/E2B_GIF.ima
- set ANIMATE=0x90=3=9=615=160 (fd3)/frame_0001.bmp
- set STAMP1=0x80=570=23 /_ISO/e2b/grub/E2BPlate.bmp
Instead of deleting the lines, you can just insert a # symbol at the start of each line – see here for more details about stamps and animation.