[U-Boot] Removing an environment variables entries in U-Boot

There is few superfluous environment variables entries (bold text) in U-Boot, that were left when I configured firmware upgrade via console port. I want to remove them, but a few variables have the same name, ACTIMAGE (2) and UBFINAME1 (4). How I can remove the ones marked in bold, without touching the rest variables with the same name?

Printenv: http://shorttext.com/Qx76Ddf

Normally, the variables should be like this: http://pastebin.com/21ZxA15X