Revert "board: rockchip: Add early ADC button detect for RGxx3"

This reverts commit 41a60d0e5cef54a59596a58940fa7c9cf071034b.

On some of the supported devices the adc detect code always returns
that the button has been pushed, and as a result the device will
not boot normally.

Signed-off-by: Chris Morgan <macromorgan@hotmail.com>
Reviewed-by: Kever Yang <kever.yang@rock-chips.com>
1 file changed