[sanitizer] Don't test __pthread_mutex_lock with GLIBC 2.34

(cherry picked from commit e60b3fc)

Author: vitalybuka

compiler-rt/test/sanitizer_common/TestCases/Linux/pthread_mutex.cpp

@@ -4,7 +4,12 @@
 
 #include <pthread.h>
 
-#ifdef USE_GLIBC
+#if !defined(__GLIBC_PREREQ)
+#define __GLIBC_PREREQ(a, b) 0
+#endif
+
+#if defined(USE_GLIBC) && !__GLIBC_PREREQ(2, 34)
+// They were removed from GLIBC 2.34
 extern "C" int __pthread_mutex_lock(pthread_mutex_t *__mutex);
 extern "C" int __pthread_mutex_unlock(pthread_mutex_t *__mutex);
 #define LOCK __pthread_mutex_lock