..." end to mandatory celibacy for clergy "...???
What we need is an end to 'making clergy'. If 'Clericalism' is sinful, as Pope Francis points out, it seems obvious that the system that divides Christian people into 'clerical caste' and 'laity class' is the evil that creates 'clericalism'.

What would happen if we went through Canon Law and simply removed everything pertaining to 'clerics'?

"Hierarchy' would not be affected -- just that it would be a 'hierarchy' of Laity.