pmdomain: amlogic: remove obsolete vpu domain driver

meson-gx-pwrc-vpu has been superseded by meson-ee-pwrc since
commit 53773f2d ("soc: amlogic: meson-ee-pwrc: add support for the Meson GX SoCs"),
so v5.8.

This driver is obsolete and no longer used or tested.
There is no reason to keep it around so remove it.

Signed-off-by: Jerome Brunet <jbrunet@baylibre.com>
Link: https://lore.kernel.org/r/20240730130227.712894-1-jbrunet@baylibre.com


Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>