What happened to CONFIG_BT_CTLR_ULL_HIGH_PRIO in Zephyr 3.1.0?

[caco3]

In Zephyr 2.7 we had to set CONFIG_BT_CTLR_ULL_HIGH_PRIO to 2, see #41401 (comment)

This flag is documented for Zephyr 3.0.0 in https://docs.zephyrproject.org/3.0.0/search.html?q=BT_CTLR_ULL_HIGH_PRIO but can not be found in 3.1.0: https://docs.zephyrproject.org/3.1.0/search.html?q=BT_CTLR_ULL_HIGH_PRIO

When building my firmware it shows a warning:

warning: BT_CTLR_ULL_HIGH_PRIO (defined at subsys/bluetooth/controller/Kconfig.ll_sw_split:388) was
assigned the value '2' but got the value '0'.

So it seems I no longer can set it as needed!