arm64: dts: imx8mp-phycore-som: Remove LDO2 and LDO4 pmic nodes

We do not touch LDO2 and LDO4 in linux as they are bypassed.
So remove them completely from device tree.
Signed-off-by: Teresa Remmet <t.remmet@phytec.de>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

arch/arm64/boot/dts/freescale/imx8mp-phycore-som.dtsi

@@ -142,13 +142,6 @@ ldo1: LDO1 {
 				regulator-min-microvolt = <1600000>;
 			};
 
-			ldo2: LDO2 {
-				regulator-always-on;
-				regulator-boot-on;
-				regulator-max-microvolt = <1150000>;
-				regulator-min-microvolt = <800000>;
-			};
-
 			ldo3: LDO3 {
 				regulator-always-on;
 				regulator-boot-on;
@@ -156,11 +149,6 @@ ldo3: LDO3 {
 				regulator-min-microvolt = <800000>;
 			};
 
-			ldo4: LDO4 {
-				regulator-max-microvolt = <3300000>;
-				regulator-min-microvolt = <800000>;
-			};
-
 			ldo5: LDO5 {
 				regulator-always-on;
 				regulator-boot-on;