move read_mmfile() into xdiff-interface

diff --git a/merge-index.c b/merge-index.c
index 646d090c58e774bdf0f412da39f4b67fd7a696c6..a9983dd78ad5cd1e364f0e00c259bdb7e6f151f0 100644 (file)
--- a/merge-index.c
+++ b/merge-index.c
@@ -1,7 +1,3 @@
-#include <sys/types.h>
-#include <sys/wait.h>
-#include <signal.h>
-
 #include "cache.h"
 
 static const char *pgm;