staging: r8188eu: remove SwLed1

The r8188eu driver does not use SwLed1. Calls from other layers to modify
the led state end up in SwLedControlMode1, where SwLed0 is hard-coded.

This patch removes the code to initialise and deinitialise SwLed1 and
the SwLed1 struct itself.

Signed-off-by: Martin Kaiser <martin@kaiser.cx>
Link: https://lore.kernel.org/r/20211207210537.23382-2-martin@kaiser.cx


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