Remove a couple of duplicated include

Signed-off-by: Marco Costalba <[email protected]>
Signed-off-by: Junio C Hamano <[email protected]>

Author: mcostalba

compat/inet_ntop.c

@@ -18,7 +18,6 @@
 #include <errno.h>
 #include <sys/types.h>
 #include <sys/socket.h>
-#include <sys/socket.h>
 #include <netinet/in.h>
 #include <arpa/inet.h>
 #include <stdio.h>

compat/inet_pton.c

@@ -18,7 +18,6 @@
 #include <errno.h>
 #include <sys/types.h>
 #include <sys/socket.h>
-#include <sys/socket.h>
 #include <netinet/in.h>
 #include <arpa/inet.h>
 #include <stdio.h>