lx07; Unlock the skillbar and you can drag the 'Basic Attack' icon off. Currently, there is no way to add it back on, for those who use that (rather than left clicking when holding Left Ctrl).
So you can, thanks. I think my problem was due to it being much harder to move items on the skillbar in this version than previous ones.
As others have noticed, if you try to move icons around (or off) quite often it doesn't work or the characters start walking around instead.
