Remove dead assignment.

ir/be/bevarargs.c

@@ -33,13 +33,11 @@ void be_default_lower_va_arg(ir_node *node)
 	ir_node *new_mem;
 	if (apmode != NULL) {
 		ir_node *const load = new_rd_Load(dbgi, block, node_mem, ap, apmode, aptype, cons_none);
-		res = new_r_Proj(load, apmode, pn_Load_res);
+		res     = new_r_Proj(load, apmode, pn_Load_res);
 		new_mem = new_r_Proj(load, mode_M,pn_Load_M);
 	} else {
-		// aptype has no associated mode, so it is represented
-		// as a pointer.
-		apmode = mode_P;
-		res = ap;
+		/* aptype has no associated mode, so it is represented as a pointer. */
+		res     = ap;
 		new_mem = node_mem;
 	}