Bluetooth: controller: Remove redundant check
Bluetooth: controller: Remove redundant check

ull_adv_data_set() is only used for legacy advertising data (either via
legacy HCI command or as fallback for extended advertising set which
uses legacy PDUs) so there is no need to check for extended advertising.

Signed-off-by: Andrzej Kaczmarek <e629a10adbe722145f074acb1ca27e72d94cfcb5@codecoup.pl>

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