--- libmalloc/libmalloc-317.100.9/src/internal.h
+++ libmalloc/libmalloc-317.40.8/src/internal.h
@@ -67,7 +67,6 @@
 #endif
 #include <os/tsd.h>
 #include <paths.h>
-#include <pthread/pthread.h>  // _pthread_threadid_self_np_direct()
 #include <pthread/private.h>  // _pthread_threadid_self_np_direct()
 #include <pthread/tsd_private.h>  // TSD keys
 #include <signal.h>
@@ -146,18 +145,6 @@
 	return malloc_tracing_enabled;
 }
 
-static inline uint32_t
-_malloc_cpu_number(void)
-{
-#if TARGET_OS_SIMULATOR
-	size_t n;
-	pthread_cpu_number_np(&n);
-	return (uint32_t)n;
-#else
-	return _os_cpu_number();
-#endif
-}
-
 /*
   * Copies the malloc library's _malloc_msl_lite_hooks_t structure to a given
   * location. Size is passed to allow the structure to  grow. Since this is