staging: r8188eu: remove PHY_RFConfig8188E()

The function PHY_RFConfig8188E() is just a wrapper around
phy_RF6052_Config_ParaFile(). Remove the wrapper.

Signed-off-by: Michael Straube <straube.linux@gmail.com>
Tested-by: Philipp Hortmann <philipp.g.hortmann@gmail.com> # Edimax N150
Link: https://lore.kernel.org/r/20220928083641.8275-3-straube.linux@gmail.com


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