[OpenMP][NFC] Remove unused clock function types and globals (#127684)

Author: Jonathan Peyton

openmp/runtime/src/kmp.h

@@ -521,13 +521,6 @@ enum library_type {
   library_throughput
 };
 
-#if KMP_OS_LINUX
-enum clock_function_type {
-  clock_function_gettimeofday,
-  clock_function_clock_gettime
-};
-#endif /* KMP_OS_LINUX */
-
 #if KMP_MIC_SUPPORTED
 enum mic_type { non_mic, mic1, mic2, mic3, dummy };
 #endif
@@ -3545,11 +3538,6 @@ extern int __kmp_hot_teams_mode;
 extern int __kmp_hot_teams_max_level;
 #endif
 
-#if KMP_OS_LINUX
-extern enum clock_function_type __kmp_clock_function;
-extern int __kmp_clock_function_param;
-#endif /* KMP_OS_LINUX */
-
 #if KMP_MIC_SUPPORTED
 extern enum mic_type __kmp_mic_type;
 #endif

openmp/runtime/src/kmp_global.cpp

@@ -242,11 +242,6 @@ enum sched_type __kmp_sch_map[kmp_sched_upper - kmp_sched_lower_ext +
     // of public intel extension schedules
 };
 
-#if KMP_OS_LINUX
-enum clock_function_type __kmp_clock_function;
-int __kmp_clock_function_param;
-#endif /* KMP_OS_LINUX */
-
 #if KMP_MIC_SUPPORTED
 enum mic_type __kmp_mic_type = non_mic;
 #endif