remove unneeded code of terminal and dmenu

dwm.c

@@ -2091,8 +2091,6 @@ sigdwmblocks(const Arg *arg)
 void
 spawn(const Arg *arg)
 {
-	if (arg->v == dmenucmd)
-		dmenumon[0] = '0' + selmon->num;
 	if (fork() == 0) {
 		if (dpy)
 			close(ConnectionNumber(dpy));