kill HAVE_STAT_ST_MTIM

Bug: 18300671
Change-Id: I92b5691924b995d9c883fc0f777c566ac4c35d1d
diff --git a/libs/host/CopyFile.c b/libs/host/CopyFile.c
index ca52565..f0c8fe5 100644
--- a/libs/host/CopyFile.c
+++ b/libs/host/CopyFile.c
@@ -68,15 +68,13 @@
  */
 static bool isHiresMtime(const struct stat* pSrcStat)
 {
-#if HAVE_STAT_ST_MTIM
-#if defined(MACOSX_RSRC)
+#if defined(__CYGWIN__) || defined(__MINGW32__)
+  return 0;
+#elif defined(MACOSX_RSRC)
     return pSrcStat->st_mtimespec.tv_nsec > 0;
 #else
     return pSrcStat->st_mtim.tv_nsec > 0;
 #endif
-#else
-    return 0;
-#endif
 }
 
 /*