This function erases the coordinates of the vertices (
x) and the
function values (
fv) in a simplex object
A simplex object.
Return an updated simplex object for which the content of the
fv elements were set to NULL.
Author of Scilab optimsimplex module: Michael Baudin (INRIA - Digiteo)
Author of R adaptation: Sebastien Bihorel (firstname.lastname@example.org)