[O] How to deactivate key binding "!" for org-agenda-toggle-deadlines?

[Martin Beck]

Hi,

 

I'd like to deactivate the key binding "!" (which is bound to org-agenda-toggle-deadlines) in agendas,

as I often hit it accidentally and then my deadlines have suddenly disappeared.

 

Where is it defined and how can I deactivate it?

 

Thanks a lot and sorry for the (I assume) trivial question.

 

Kind regards

 

Martin