there are many TRAINS WITHOUT PANTRY.
on board catering is provided. passengers have to make sure that they vbook food on time when asked for it as all Lunch is loaded via a single big station.
Ex, Mumbai Haridwar AC SF
Magadh Express
Pantry...
more... is a WASTE & will occupy the space of a coach if added in such trains. It makes little to no difference to passengers if on board catering is provided instead.