Remove <sys/_types.h>.

Bug: 12213562
Change-Id: I0d10664f9da60739bdbad0408be0dd61eea3c1fe
diff --git a/libc/include/sys/socket.h b/libc/include/sys/socket.h
index 32d98ea..5eb7e3d 100644
--- a/libc/include/sys/socket.h
+++ b/libc/include/sys/socket.h
@@ -43,8 +43,7 @@
 __BEGIN_DECLS
 
 #define sockaddr_storage __kernel_sockaddr_storage
-typedef __sa_family_t sa_family_t;
-typedef int socklen_t;
+typedef unsigned short sa_family_t;
 
 #ifdef __mips__
 #define SOCK_DGRAM      1