deleting homebrew

is there a way i can take homebrew off my wii?

Delete it.

Use HackMii Installer to uninstall HBC, DVDx and BootMii (note: Removing BootMii as boot2 is a bit risky, but it should be reasonably safe. As long as you don't lose power you should be fine). If you installed any custom channels or cIOS, you should delete them all using AnyTitle Deleter first, before uninstalling HBC with HackMii Installer.

This is somewhat related, but when BootMii/boot2 is uninstalled, is boot2 returned to a completely normal state?

Yes, I believe it is.