arm64: dts: broadcom: delete redundant pcie enablement nodes

arm64: dts: broadcom: delete redundant pcie enablement nodes

The pcie1 and pcie2 override nodes to enable the respective peripherals are
declared both in bcm2712-rpi-5-b.dts and bcm2712-rpi-5-b-ovl-rp1.dts, which
makes those declared in the former file redundant.

Drop those redundant nodes from the board devicetree.

Signed-off-by: Andrea della Porta <andrea.porta@suse.com>
Link: https://lore.kernel.org/r/2865b787d893fd1dcf816e1c96856711754d612d.1754914766.git.andrea.porta@suse.com
Signed-off-by: Florian Fainelli <florian.fainelli@broadcom.com>