ARM: shmobile: Remove Genmai reference DTS

Now that the DTS file r7s72100-genmai.dts can be used with
board-genmai.c and board-genmai-reference.c, proceed with removing
r7s72100-genmai-reference.dts.

Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>

arch/arm/boot/dts/r7s72100-genmai-reference.dts

@@ -1,59 +0,0 @@
-/*
- * Device Tree Source for the Genmai board
- *
- * Copyright (C) 2013-14 Renesas Solutions Corp.
- * Copyright (C) 2014 Wolfram Sang, Sang Engineering <wsa@sang-engineering.com>
- *
- * This file is licensed under the terms of the GNU General Public License
- * version 2.  This program is licensed "as is" without any warranty of any
- * kind, whether express or implied.
- */
-
-/dts-v1/;
-#include "r7s72100.dtsi"
-
-/ {
-	model = "Genmai";
-	compatible = "renesas,genmai-reference", "renesas,r7s72100";
-
-	aliases {
-		serial2 = &scif2;
-	};
-
-	chosen {
-		bootargs = "console=ttySC2,115200 ignore_loglevel rw root=/dev/nfs ip=dhcp";
-	};
-
-	memory {
-		device_type = "memory";
-		reg = <0x08000000 0x08000000>;
-	};
-
-	lbsc {
-		#address-cells = <1>;
-		#size-cells = <1>;
-	};
-};
-
-&extal_clk {
-	clock-frequency = <13330000>;
-};
-
-&usb_x1_clk {
-	clock-frequency = <48000000>;
-};
-
-&i2c2 {
-	status = "okay";
-	clock-frequency = <400000>;
-
-	eeprom@50 {
-		compatible = "renesas,24c128";
-		reg = <0x50>;
-		pagesize = <64>;
-	};
-};
-
-&scif2 {
-	status = "okay";
-};