jac_lin_coord doesn't need to know x

[dpo]

There's no need to pass x to jac_lin_coord() since the result is independent of x.

EDIT (@tmigot)

ToDo is to replace jac_lin_coord(nlp, x) by jac_lin_coord(nlp) and jac_lin_coord!(nlp, x, vals) by jac_lin_coord!(nlp, vals).