sink: Remove unnecessary SetDevice method

Unused, doesn't do anything.

src/audio_core/cubeb_sink.cpp

@@ -120,8 +120,6 @@ size_t CubebSink::SamplesInQueue() const {
     return impl->queue.size() / 2;
 }
 
-void CubebSink::SetDevice(int device_id) {}
-
 long CubebSink::Impl::DataCallback(cubeb_stream* stream, void* user_data, const void* input_buffer,
                                    void* output_buffer, long num_frames) {
     Impl* impl = static_cast<Impl*>(user_data);

src/audio_core/cubeb_sink.h

@@ -22,7 +22,6 @@ public:
     size_t SamplesInQueue() const override;
 
     std::vector<std::string> GetDeviceList() const override;
-    void SetDevice(int device_id) override;
 
 private:
     struct Impl;

src/audio_core/null_sink.h

@@ -24,8 +24,6 @@ public:
         return 0;
     }
 
-    void SetDevice(int device_id) override {}
-
     std::vector<std::string> GetDeviceList() const override {
         return {};
     }

src/audio_core/sdl2_sink.cpp

@@ -114,10 +114,6 @@ size_t SDL2Sink::SamplesInQueue() const {
     return total_size;
 }
 
-void SDL2Sink::SetDevice(int device_id) {
-    this->device_id = device_id;
-}
-
 void SDL2Sink::Impl::Callback(void* impl_, u8* buffer, int buffer_size_in_bytes) {
     Impl* impl = reinterpret_cast<Impl*>(impl_);
 

src/audio_core/sdl2_sink.h

@@ -22,12 +22,10 @@ public:
     size_t SamplesInQueue() const override;
 
     std::vector<std::string> GetDeviceList() const override;
-    void SetDevice(int device_id) override;
 
 private:
     struct Impl;
     std::unique_ptr<Impl> impl;
-    int device_id;
     std::vector<std::string> device_list;
 };
 

src/audio_core/sink.h

@@ -32,12 +32,6 @@ public:
     /// Samples enqueued that have not been played yet.
     virtual std::size_t SamplesInQueue() const = 0;
 
-    /**
-     * Sets the desired output device.
-     * @param device_id ID of the desired device.
-     */
-    virtual void SetDevice(int device_id) = 0;
-
     /// Returns the list of available devices.
     virtual std::vector<std::string> GetDeviceList() const = 0;
 };