arm64: dts: ti: k3-j721e: Drop SoC level aliases

Drop the SoC level aliases as these need to be done at board level.

Signed-off-by: Nishanth Menon <nm@ti.com>
Link: https://lore.kernel.org/r/20230601183151.1000157-10-nm@ti.com


Signed-off-by: Vignesh Raghavendra <vigneshr@ti.com>