staging: rtl8192e: Remove priv->rf_chip in _rtl92e_set_tx_power_level

priv->rf_chip is initialized to RF_8256 and never changed. Remove
condition in function _rtl92e_set_tx_power_level as it is dead code.

Signed-off-by: Philipp Hortmann <philipp.g.hortmann@gmail.com>
Link: https://lore.kernel.org/r/465a789243287c1420fdce68f9a861784a164140.1679732276.git.philipp.g.hortmann@gmail.com


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