Clean up adb Win32 symlink #ifdefs.

Change-Id: I83ef30e82d820f91960c29f6b737e6e900caaca6
diff --git a/adb/file_sync_client.c b/adb/file_sync_client.c
index 7fb3e3b..ee09d5d 100644
--- a/adb/file_sync_client.c
+++ b/adb/file_sync_client.c
@@ -309,7 +309,9 @@
     return err;
 }
 
-#ifdef HAVE_SYMLINKS
+#if defined(_WIN32)
+extern int write_data_link(int fd, const char *path, syncsendbuf *sbuf) __attribute__((error("no symlinks on Windows")));
+#else
 static int write_data_link(int fd, const char *path, syncsendbuf *sbuf)
 {
     int len, ret;
@@ -364,10 +366,8 @@
         free(file_buffer);
     } else if (S_ISREG(mode))
         write_data_file(fd, lpath, sbuf, show_progress);
-#ifdef HAVE_SYMLINKS
     else if (S_ISLNK(mode))
         write_data_link(fd, lpath, sbuf);
-#endif
     else
         goto fail;