clk: mediatek: reset: Remove unused mtk_register_reset_controller()

Now that all clock controllers have been migrated to the new
mtk_register_reset_controller_with_dev() function, the one taking
struct device node is now unused: remove it.

Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Link: https://lore.kernel.org/r/20240718082528.220750-1-angelogioacchino.delregno@collabora.com


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