Revert "clk: sunxi-ng: sun6i-rtc: Add support for H6"

This reverts commit 1738890a.

Commit 1738890a ("clk: sunxi-ng: sun6i-rtc: Add support for H6")
breaks HDMI output on Tanix TX6 mini board. Exact reason isn't known,
but because that commit doesn't actually improve anything, let's just
revert it.

Cc: stable@vger.kernel.org
Signed-off-by: Jernej Skrabec <jernej.skrabec@gmail.com>
Link: https://lore.kernel.org/r/20220511200206.2458274-1-jernej.skrabec@gmail.com


Signed-off-by: Stephen Boyd <sboyd@kernel.org>