staging: rtl8192e: Remove priv->rf_chip in rtl92e_set_tx_power

priv->rf_chip is initialized to RF_8256 and never changed. Remove
condition in function rtl92e_set_tx_power as it is dead code.

Signed-off-by: Philipp Hortmann <philipp.g.hortmann@gmail.com>
Link: https://lore.kernel.org/r/190d0a77602cb89bc24512c99b72f25f4ca5d5e2.1679732276.git.philipp.g.hortmann@gmail.com


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