It looks like I get a "New" action for every related list on have on a page layout when the page layout is view in Mobile / SF1/ Salesforce1 aka net/new.app.

In the layout in question, the New button as been disabled on the layout.  So in the regular (aloha) interface, there's no New button on the related list.

On Account, I get New Task, New Case, New Opportunity, etc.  But I don't want "New Opportunity".  None of those buttons are listed in the action list on the page layout definition so I don't know how they are editable.

I don't want the New Opportunity button on Account in SF1 but I'm getting it.

Is there a different way to remove the New button for a related list on the mobile / sf1 interface?