Can we add a "Nevermind" or "Cancel That" ping?

A lot of the times I find myself pinging mia for my lane only for my laner to pop into vision a few seconds later, or I ping that I'm coming to a certain lane but something more important pops up in a different lane, I'd like a way to just quickly ping "Nevermind" so that people know whats going on without me having to waste time typing it out.