package/libnss: bump version to 3.60.1

Bump version to 3.60.1 and remove local patch that has been upstreamed.

Release Notes:
https://developer.mozilla.org/en-US/docs/Mozilla/Projects/NSS/NSS_3.60_1_release_notes



Signed-off-by: Giulio Benetti <giulio.benetti@benettiengineering.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>