[refactor]: rearrange code

inc/Adder.h

@@ -8,11 +8,7 @@
 struct Adder {
     static void SumOscillators(const std::vector<Oscillator*>& oscillators,
                                std::vector<float>& signal) {
-        size_t sample_count =
-            STREAM_BUFFER_SIZE; //(size_t)(1.f/FPS * SAMPLE_RATE);
-
-        // std::vector<float>* output = new std::vector<float>();
-        // output->reserve(sample_count);
+        size_t sample_count = STREAM_BUFFER_SIZE;
 
         for (size_t i = 0; i < sample_count; i++) {
             float sample = 0.0f;