phy: core: Remove unused phy_pm_runtime_(allow|forbid)

phy_pm_runtime_allow() and phy_pm_runtime_forbid() were added in 2013
as part of
commit ff764963 ("drivers: phy: add generic PHY framework")
but have remained unused.

Remove them.
Fix up the (English) docs - I've left the Chinese translation.

Signed-off-by: Dr. David Alan Gilbert <linux@treblig.org>
Link: https://lore.kernel.org/r/20250306015408.277729-1-linux@treblig.org


Signed-off-by: Vinod Koul <vkoul@kernel.org>