staging: rtl8723bs: os_dep: Drop condition with no effect

As the "else if" and "else" branch body are identical the condition
has no effect. So drop the "else if" condition.

Signed-off-by: Saurav Girepunje <saurav.girepunje@gmail.com>
Link: https://lore.kernel.org/r/20190821181631.GA11082@saurav


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