Philippe Gerum authored Jan 23, 2021 and Jan Kiszka committed Mar 08, 2021

As we move away from the representation of time based on hardware
clock ticks, keeping cobalt_read_hrclock() makes no sense anymore.

This was an internal, undocumented service returning the hardware TSC
value for the platform. The log of commit #d584a57d

 which introduced it
clearly stated that applications should stick with the common
representation used by clock_gettime(), i.e. nanosecs.

Signed-off-by: Philippe Gerum <rpm@xenomai.org>