arm64: dts: ti: k3-j784s4-evm-usxgmii-exp1-exp2: drop pinctrl-names

The "pinctrl-names" property is not required since it doesn't have an
associated pinctrl configuration. Hence, drop it.

Signed-off-by: Siddharth Vadapalli <s-vadapalli@ti.com>
Link: https://lore.kernel.org/r/20250411061425.640718-1-s-vadapalli@ti.com


Signed-off-by: Nishanth Menon <nm@ti.com>