arm64: dts: mediatek: mt8195-demo: Remove input-name property

This property doesn't seem to exist in the documentation nor
in source code, let's remove it from the device-tree.

Signed-off-by: Fabien Parent <fparent@baylibre.com>
Link: https://lore.kernel.org/r/20220426134106.242353-7-fparent@baylibre.com
Signed-off-by: Matthias Brugger <matthias.bgg@gmail.com>

Author: Fabo

arch/arm64/boot/dts/mediatek/mt8195-demo.dts

@@ -34,7 +34,6 @@
 
 	gpio-keys {
 		compatible = "gpio-keys";
-		input-name = "gpio-keys";
 		pinctrl-names = "default";
 		pinctrl-0 = <&gpio_keys_pins>;