sink_details: Listing available devices should be separate from sink construction

src/audio_core/sink.h

@@ -31,9 +31,6 @@ public:
 
     /// Samples enqueued that have not been played yet.
     virtual std::size_t SamplesInQueue() const = 0;
-
-    /// Returns the list of available devices.
-    virtual std::vector<std::string> GetDeviceList() const = 0;
 };
 
 } // namespace AudioCore