Kill useless include of <sys/timeb.h>.

cad/xnecview/patches/patch-draw_c

@@ -0,0 +1,12 @@
+$OpenBSD: patch-draw_c,v 1.1 2013/12/06 15:22:40 jca Exp $
+--- draw.c.orig	Fri Dec  6 16:21:50 2013
++++ draw.c	Fri Dec  6 16:21:52 2013
+@@ -616,8 +616,6 @@ void draw_gain_phi(int j,Radpattern *rp)
+ #define R270 (1.5*M_PI)
+ #define R360 (2*M_PI)
+ 
+-#include <sys/timeb.h>
+-
+ void draw_gain(int ie,Radpattern *rp)
+ {
+    int i,j;