ramips: mt7620: disable PCIe if nothing is attached

All boards neither expose the PCIe as Mini-PCIe nor have anything
attached to the PCIe Bus. Disable PCIe for those by dropping the node
from the dts files.

Signed-off-by: Mathias Kresin <dev@kresin.me>

target/linux/ramips/dts/CS-QR10.dts

@@ -156,7 +156,3 @@
 &wmac {
 	ralink,mtd-eeprom = <&factory 0>;
 };
-
-&pcie {
-	status = "okay";
-};

target/linux/ramips/dts/DB-WRT01.dts

@@ -104,7 +104,3 @@
 &wmac {
 	ralink,mtd-eeprom = <&factory 0>;
 };
-
-&pcie {
-	status = "okay";
-};

target/linux/ramips/dts/MicroWRT.dts

@@ -87,10 +87,6 @@
 	status = "okay";
 };
 
-&pcie {
-	status = "okay";
-};
-
 &ethernet {
 	pinctrl-names = "default";
 	pinctrl-0 = <&ephy_pins>;

target/linux/ramips/dts/OY-0001.dts

@@ -128,7 +128,3 @@
 &ohci {
 	status = "okay";
 };
-
-&pcie {
-	status = "okay";
-};