Remove unneeded mutex checks

CMakeLists.txt

@@ -636,7 +636,6 @@ int main()
                 PTHREAD_SETNAME_NP_THREE_PARAMS
             )
         ENDIF()
-        CHECK_SYMBOL_EXISTS(pthread_mutexattr_setkind_np "pthread.h;pthread_np.h" HAVE_PTHREAD_MUTEXATTR_SETKIND_NP)
     ELSE()
         CHECK_SYMBOL_EXISTS(pthread_setname_np pthread.h HAVE_PTHREAD_SETNAME_NP)
         IF(NOT HAVE_PTHREAD_SETNAME_NP)
@@ -661,11 +660,8 @@ int main()
                 PTHREAD_SETNAME_NP_THREE_PARAMS
             )
         ENDIF()
-        CHECK_SYMBOL_EXISTS(pthread_mutexattr_setkind_np pthread.h HAVE_PTHREAD_MUTEXATTR_SETKIND_NP)
     ENDIF()
 
-    CHECK_SYMBOL_EXISTS(pthread_mutex_timedlock pthread.h HAVE_PTHREAD_MUTEX_TIMEDLOCK)
-
     CHECK_LIBRARY_EXISTS(rt clock_gettime "" HAVE_LIBRT)
     IF(HAVE_LIBRT)
         SET(EXTRA_LIBS rt ${EXTRA_LIBS})

config.h.in

@@ -178,9 +178,3 @@
 
 /* Define if we have pthread_set_name_np() */
 #cmakedefine HAVE_PTHREAD_SET_NAME_NP
-
-/* Define if we have pthread_mutexattr_setkind_np() */
-#cmakedefine HAVE_PTHREAD_MUTEXATTR_SETKIND_NP
-
-/* Define if we have pthread_mutex_timedlock() */
-#cmakedefine HAVE_PTHREAD_MUTEX_TIMEDLOCK