closeStream() function is empty and device doesn't close properly when using Soapy

[Interceptor777]

Hey all, the XTRX Soapy wrapper has A LOT of issues and missing functionality. The issues become even more apparent when using SoapyRemote.

For some reason currently, when closeStream() is called through SoapyRemote, nothing happens and the XTRX never closes. Using fuser, you can see that the XTRX device is in fact still open. This means that anytime you interact with the XTRX, you need to restart the SoapyRemote server to be able to use it again.

Upon further inspection, closeStream() doesn't even do anything. It's literally empty.