boards: nrf5340dk_nrf5340_cpunet: Remove explicit BT_HCI_VS enable
boards: nrf5340dk_nrf5340_cpunet: Remove explicit BT_HCI_VS enable

Remove explicit BT_HCI_VS enable, this will be enabled when
the used Controller selects BT_HAS_HCI_VS.

Signed-off-by: Vinayak Kariappa Chettimada <e780c9f87dc729ad454f47292ad82c8652353064@nordicsemi.no>

galak/zephyr,galak/zephyr,zephyrproject-rtos/zephyr,finikorg/zephyr,finikorg/zephyr,finikorg/zephyr,zephyrproject-rtos/zephyr,finikorg/zephyr,galak/zephyr,finikorg/zephyr,zephyrproject-rtos/zephyr,galak/zephyr,zephyrproject-rtos/zephyr,galak/zephyr,zephyrproject-rtos/zephyr