staging: rtl8192u: remove the if condition without effect

In function rtl8192_adapter_start priv->pFirmware->firmware_status
is assign to FW_STATUS_0_INIT just after assignment variable is
again get check for same value. Therefore if condition will be
always be true. So remove the if condition ,else if section and
else section which will never get execute.

Signed-off-by: Saurav Girepunje <saurav.girepunje@gmail.com>
Link: https://lore.kernel.org/r/YYijapuGOmObwM3S@Sauravs-MacBook-Air.local


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