Do not duplicate stuff from ldso.h

ldso/ldso/arm/dl-syscalls.h

@@ -3,17 +3,5 @@
  * before the errno symbol is dynamicly linked. */
 
 #define __set_errno(X) {(void)(X);}
-
-/* Prepare for the case that `__builtin_expect' is not available.  */
-#if __GNUC__ == 2 && __GNUC_MINOR__ < 96
-#define __builtin_expect(x, expected_value) (x)
-#endif
-#ifndef likely
-# define likely(x)	__builtin_expect((!!(x)),1)
-#endif
-#ifndef unlikely
-# define unlikely(x)	__builtin_expect((!!(x)),0)
-#endif
-
 #include "sys/syscall.h"