timekeeping: Remove ktime_get_snapshot()

All users have been converted to ktime_get_snapshot_id().

Signed-off-by: Thomas Gleixner <tglx@kernel.org>
Tested-by: David Woodhouse <dwmw@amazon.co.uk>
Tested-by: Arthur Kiyanovski <akiyano@amazon.com>
Reviewed-by: David Woodhouse <dwmw@amazon.co.uk>
Reviewed-by: Thomas Weißschuh <thomas.weissschuh@linutronix.de>
Reviewed-by: Jacob Keller <jacob.e.keller@intel.com>
Link: https://patch.msgid.link/20260529195557.795510496@kernel.org

include/linux/timekeeping.h

@@ -350,11 +350,6 @@ extern int get_device_system_crosststamp(
  */
 extern void ktime_get_snapshot_id(clockid_t clock_id, struct system_time_snapshot *systime_snapshot);
 
-static inline void ktime_get_snapshot(struct system_time_snapshot *systime_snapshot)
-{
-	ktime_get_snapshot_id(CLOCK_REALTIME, systime_snapshot);
-}
-
 /*
  * Persistent clock related interfaces
  */