package/pkcs11-helper: bump to version 1.28

Drop patch (already in version)

https://github.com/OpenSC/pkcs11-helper/releases/tag/pkcs11-helper-1.28



Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>