staging: rtl8192e: remove unnecessary wrapper

staging: rtl8192e: remove unnecessary wrapper

_rtl92e_dm_ctrl_initgain_byrssi() is just a wrapper around
_rtl92e_dm_ctrl_initgain_byrssi_driver(). Using a wrapper here adds
no value, remove it. Keep the name _rtl92e_dm_ctrl_initgain_byrssi().

Signed-off-by: Michael Straube <straube.linux@gmail.com>
Tested-by: Philipp Hortmann <philipp.g.hortmann@gmail.com>
Link: https://lore.kernel.org/r/20240329111458.14961-1-straube.linux@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>