board: rockchip: Remove ARM SCMI Support from RGxx3

Remove config options for ARM SCMI. It is not required to boot the
board and when using the most recent mainline A-TF it actually causes
the device to freeze during boot due to missing SCMI support.

Signed-off-by: Chris Morgan <macromorgan@hotmail.com>
Reviewed-by: Kever Yang <kever.yang@rock-chips.com>
diff --git a/configs/anbernic-rgxx3-rk3566_defconfig b/configs/anbernic-rgxx3-rk3566_defconfig
index 8855a75..d3216ec 100644
--- a/configs/anbernic-rgxx3-rk3566_defconfig
+++ b/configs/anbernic-rgxx3-rk3566_defconfig
@@ -50,8 +50,6 @@
 CONFIG_SPL_SYSCON=y
 CONFIG_SPL_ADC=y
 CONFIG_SPL_CLK=y
-CONFIG_ARM_SMCCC_FEATURES=y
-CONFIG_SCMI_FIRMWARE=y
 CONFIG_ROCKCHIP_GPIO=y
 CONFIG_SYS_I2C_ROCKCHIP=y
 CONFIG_MISC=y