staging: r8188eu: remove unused rtl8192c_PHY_GetHWRegOriginalValue()

Function rtl8192c_PHY_GetHWRegOriginalValue() is unused, remove it.

Signed-off-by: Michael Straube <straube.linux@gmail.com>
Link: https://lore.kernel.org/r/20210908223903.10516-5-straube.linux@gmail.com


Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>