ARM: dts: aspeed: rainier: Remove SPI NOR controllers

Early Rainier builds had SPI NOR as a fallback boot device when eMMC
was not programmed. Most systems don't have the NOR populated, so remove
it from the device tree as it is not used.
Signed-off-by: Joel Stanley <joel@jms.id.au>
Link: https://lore.kernel.org/r/20220120063307.63898-1-joel@jms.id.auSigned-off-by: Joel Stanley <joel@jms.id.au>

arch/arm/boot/dts/aspeed-bmc-ibm-rainier.dts

@@ -2364,30 +2364,6 @@ &mac3 {
 	use-ncsi;
 };
 
-&fmc {
-	status = "okay";
-	flash@0 {
-		status = "okay";
-		m25p,fast-read;
-		label = "bmc";
-		spi-max-frequency = <50000000>;
-#include "openbmc-flash-layout-128.dtsi"
-	};
-};
-
-&spi1 {
-	status = "okay";
-	pinctrl-names = "default";
-	pinctrl-0 = <&pinctrl_spi1_default>;
-
-	flash@0 {
-		status = "okay";
-		m25p,fast-read;
-		label = "pnor";
-		spi-max-frequency = <100000000>;
-	};
-};
-
 &wdt1 {
 	aspeed,reset-type = "none";
 	aspeed,external-signal;