Follow these steps get rid of the error that efmenu doesn't exist in GUIs created while Ezfit was installed:
**Note I'd create a backup in case something goes wrong.**
fname='fig.fig'; % <- your fig name...
%get rid of the 'efmenu' entry in CreateFcn
%additionally you'll need to get rid of the EZfit items created in the GUI.
%Go through and get rid of any remaining references in the
%children that are related to Ezfit.
%These remaining reference items are most likely the EZfit uimenus and can alternatively be remove
%in the Menu Editor inside the GUIDE interface.