Remove pointless calls to access(2) when checking for .mailmap

read_mailmap already returns not 0 in case of error, and nothing
seem to be interested in it. It also is silent about the fact
(read_mailmap being to chatty would justify the call to access,
but there is no point for it to be and it isn't).

Signed-off-by: Alex Riesen <raa.lkml@gmail.com>
Signed-off-by: Junio C Hamano <junkio@cox.net>

builtin-blame.c

@@ -2375,7 +2375,7 @@ int cmd_blame(int argc, const char **argv, const char *prefix)
 		die("reading graft file %s failed: %s",
 		    revs_file, strerror(errno));
 
-	if (!no_mailmap && !access(".mailmap", R_OK))
+	if (!no_mailmap)
 		read_mailmap(&mailmap, ".mailmap", NULL);
 
 	assign_blame(&sb, &revs, opt);