Cleanup the AMD64 timer function.

opal/include/opal/sys/amd64/timer.h

@@ -25,19 +25,6 @@ typedef uint64_t opal_timer_t;
 
 #if OPAL_GCC_INLINE_ASSEMBLY
 
-#if 0
-static inline opal_timer_t
-opal_sys_timer_get_cycles(void)
-{
-    opal_timer_t ret;
-
-    __asm__ __volatile__("rdtsc" : "=A"(ret));
-
-    return ret;
-}
-
-#else
-
 static inline opal_timer_t 
 opal_sys_timer_get_cycles(void)
 {
@@ -46,8 +33,6 @@ opal_sys_timer_get_cycles(void)
      return ((opal_timer_t)a) | (((opal_timer_t)d) << 32);
 }
 
-#endif
-
 #define OPAL_HAVE_SYS_TIMER_GET_CYCLES 1
 
 #else