The ego is part of one's psyche, at least in theory. Erasing it
is not possible. However, a theory may be proposed in which there
is no mention of the ego.
If we erase the ego from a person I believe that they would be
considered by definition as insane. That is, if you look at the
meaning of the word 'ego' opposed to the idea that it is something
that makes you feel superior and what not it is the word that is
used to describe one's self, the way you feel personally separate
to anyone'anything else, without ego you would not feel like
someone, rather, you would have no boundaries with the rest of the
world and you would live in it as light, water and the earth around
you does with nothing to distinguish yourself from it. This is my
understanding atleast using what I believe to be the correct
definition of the word 'ego'.