arm64: dts: apm: Remove unused and undocumented "bus_num" property

Remove "bus_num" property which is both unused in the kernel and
undocumented. Most likely they are leftovers from downstream.

Signed-off-by: Rob Herring (Arm) <robh@kernel.org>
Link: https://lore.kernel.org/r/20241115195049.3637454-2-robh@kernel.org
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

Author: robherring

arch/arm64/boot/dts/apm/apm-shadowcat.dtsi

@@ -809,7 +809,6 @@
 			interrupts = <0 0x45 0x4>;
 			#clock-cells = <1>;
 			clocks = <&sbapbclk 0>;
-			bus_num = <1>;
 		};
 
 		i2c4: i2c@10640000 {
@@ -819,7 +818,6 @@
 			reg = <0x0 0x10640000 0x0 0x1000>;
 			interrupts = <0 0x3a 0x4>;
 			clocks = <&i2c4clk 0>;
-			bus_num = <4>;
 		};
 	};
 };

arch/arm64/boot/dts/apm/apm-storm.dtsi

@@ -851,7 +851,6 @@
 			interrupts = <0 0x44 0x4>;
 			#clock-cells = <1>;
 			clocks = <&ahbclk 0>;
-			bus_num = <0>;
 		};
 
 		phy1: phy@1f21a000 {