uboot-imx

board: samsung: trats2: remove the board_power_init() function

Remove the board_power_init() function.
It will be initialized with device-tree.
In future, it will be controlled with regulator API.

Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com>
Signed-off-by: Minkyu Kang <mk7.kang@samsung.com>