staging: r8188eu: remove set but unused variable

The local variable rfPath in Hal_SetAntennaPathPower() and
Hal_SetTxPower() is set but not used. Remove the variable
and related code.

Signed-off-by: Michael Straube <straube.linux@gmail.com>
Link: https://lore.kernel.org/r/20210830092153.9283-3-straube.linux@gmail.com


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