Revert "arm64: dts: rockchip: add SPDIF audio to Beelink A1"

Revert "arm64: dts: rockchip: add SPDIF audio to Beelink A1"

This reverts commit bdc4d388c6452498ab62ef2564589f40e0c8c262.

While Beelink A1 mostly follows the high-end RK3328 reference design,
it does not in fact have the S/PDIF connector, only HDMI and a 3.5mm
jack for the analog audio/TV codecs - the tiny form factor literally
doesn't have room to fit more!

Cc: Christian Hewitt <christianshewitt@gmail.com>
Cc: Alex Bee <knaerzche@gmail.com>
Fixes: bdc4d388c645 ("arm64: dts: rockchip: add SPDIF audio to Beelink A1")
Signed-off-by: Robin Murphy <robin.murphy@arm.com>
Link: https://patch.msgid.link/0af77a02c2b0806d4ca72066392a5453fcc89a8f.1767111968.git.robin.murphy@arm.com
Signed-off-by: Heiko Stuebner <heiko@sntech.de>