s390/time: remove monotonic_clock()

Remove unused monotonic_clock() function.
Signed-off-by: NHeiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: NVasily Gorbik <gor@linux.ibm.com>

arch/s390/include/asm/timex.h

@@ -179,7 +179,6 @@ static inline cycles_t get_cycles(void)
 
 int get_phys_clock(unsigned long *clock);
 void init_cpu_timer(void);
-unsigned long long monotonic_clock(void);
 
 extern unsigned char tod_clock_base[16] __aligned(8);
 

arch/s390/kernel/time.c

@@ -110,15 +110,6 @@ unsigned long long notrace sched_clock(void)
 }
 NOKPROBE_SYMBOL(sched_clock);
 
-/*
- * Monotonic_clock - returns # of nanoseconds passed since time_init()
- */
-unsigned long long monotonic_clock(void)
-{
-	return sched_clock();
-}
-EXPORT_SYMBOL(monotonic_clock);
-
 static void ext_to_timespec64(unsigned char *clk, struct timespec64 *xt)
 {
 	unsigned long long high, low, rem, sec, nsec;