systemd: Drop redundant musl patches

These patches are no longer needed in version 250, they have been
dragged along rebasing over releases unnessarily. Lets remove them

Signed-off-by: Khem Raj <raj.khem@gmail.com>
Signed-off-by: Luca Ceresoli <luca.ceresoli@bootlin.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
(cherry picked from commit 216fe2b8)
Signed-off-by: Steve Sakoman <steve@sakoman.com>