ivi-shell: Delete duplicated of definition.

> > > > Looks identical to enum ivi_layout_transition_type, do you
> > > > really need another?
> > > [ntanibata] Question: Do you mean why there are many types?
> >
> > Why define ivi_layout_inner_transition_type, when
> > ivi_layout_transition_type is already the same down to the actual
> > values, if I'm not mistaken?
> >
> > Why not just use ivi_layout_transition_type everywhere?
> [ntanibata] Oh, I see "inner". I will fix them. I jumped the gun:)

Signed-off-by: Nobuhiko Tanibata <NOBUHIKO_TANIBATA@xddp.denso.co.jp>