xtensa: timex.h: remove unused symbols

# error "Bad timer number for Linux configurations!"

#endif

#define LINUX_TIMER_MASK        (1L << LINUX_TIMER_INT)

#define CLOCK_TICK_RATE 	1193180	/* (everyone is using this value) */

#define CLOCK_TICK_FACTOR       20 /* Factor of both 10^6 and CLOCK_TICK_RATE */

#ifdef CONFIG_XTENSA_CALIBRATE_CCOUNT

extern unsigned long ccount_per_jiffy;

extern unsigned long nsec_per_ccount;

#define CCOUNT_PER_JIFFY ccount_per_jiffy

#define NSEC_PER_CCOUNT  nsec_per_ccount

#else

#define CCOUNT_PER_JIFFY (CONFIG_XTENSA_CPU_CLOCK*(1000000UL/HZ))

#define NSEC_PER_CCOUNT (1000UL / CONFIG_XTENSA_CPU_CLOCK)

#endif