ARM: tegra: remove tegra114-pluto.dts

Early upstream work on Tegra114 was performed on the Pluto board.
However, it's not used any more, and the DT doesn't contain anything
beyond a serial port, so the file isn't useful either. Remove it.
Signed-off-by: NStephen Warren <swarren@nvidia.com>

arch/arm/boot/dts/Makefile

@@ -224,8 +224,7 @@ dtb-$(CONFIG_ARCH_TEGRA) += tegra20-harmony.dtb \
 	tegra30-beaver.dtb \
 	tegra30-cardhu-a02.dtb \
 	tegra30-cardhu-a04.dtb \
-	tegra114-dalmore.dtb \
-	tegra114-pluto.dtb
+	tegra114-dalmore.dtb
 dtb-$(CONFIG_ARCH_VERSATILE) += versatile-ab.dtb \
 	versatile-pb.dtb
 dtb-$(CONFIG_ARCH_U300) += ste-u300.dtb

arch/arm/boot/dts/tegra114-pluto.dts

-/dts-v1/;
-
-#include "tegra114.dtsi"
-
-/ {
-	model = "NVIDIA Tegra114 Pluto evaluation board";
-	compatible = "nvidia,pluto", "nvidia,tegra114";
-
-	memory {
-		reg = <0x80000000 0x40000000>;
-	};
-
-	serial@70006300 {
-		status = "okay";
-	};
-
-	pmc {
-		nvidia,invert-interrupt;
-	};
-
-	clocks {
-		compatible = "simple-bus";
-		#address-cells = <1>;
-		#size-cells = <0>;
-
-		clk32k_in: clock {
-			compatible = "fixed-clock";
-			reg=<0>;
-			#clock-cells = <0>;
-			clock-frequency = <32768>;
-		};
-	};
-};