Remove change because __builtin_prefetch is no longer called on Windows

Signed-off-by: Gregory Shimansky <[email protected]>

Author: gshimansky

third_party/f2reduce/f2reduce.cpp

@@ -4,8 +4,6 @@
 #include <stdlib.h>
 
 #if defined(_MSC_VER)
-#include <xmmintrin.h> // For _mm_prefetch
-#define __builtin_prefetch(addr) _mm_prefetch(reinterpret_cast<const char *>(addr), _MM_HINT_T0)
 #define RESTRICT __restrict
 #define NO_INLINE __declspec(noinline)
 #elif defined(__GNUC__)