package/chrony: bump to version 4.1

Drop patch (already in version)

https://git.tuxfamily.org/chrony/chrony.git/tree/NEWS?id=4.1



Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>