staging: rtl8192e: Remove local variable Value and powerlevelOFDM24G

powerlevelOFDM24G is set to priv->pwr_track. Then Value is set to
powerlevelOFDM24G and then only once used. Remove both variables to
increase readability.

Signed-off-by: Philipp Hortmann <philipp.g.hortmann@gmail.com>
Link: https://lore.kernel.org/r/2076dc2f8f5afc11cbab23bc3f5d4ace9bf33bfd.1680427945.git.philipp.g.hortmann@gmail.com


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