Hertel-Mehlhorn Algorithm constantly calls remove() on a vector

[Kyzzsa]

Given that remove() is O(n) in time complexity, could this line of code be replaced by a swap_remove(), or can we simply replace that element by a None value?

parry/src/transformation/hertel_mehlhorn.rs

Line 114 in 72f842d

let _ = indices.remove(i_poly2);