Moved responsibility for throwing in a low-pass filter up to the Vic, appropriately.

Components/6560/6560.cpp

@@ -15,11 +15,7 @@ Speaker::Speaker() :
 	_control_registers{0, 0, 0, 0},
 	_shift_registers{0, 0, 0, 0},
 	_counters{2, 1, 0, 0}	// create a slight phase offset for the three channels
-{
-	// The Vic has a 1.6Khz low-pass filter;
-	// TODO: this is part of the Vic-20, not part of the 6560. So relocate it.
-	set_high_frequency_cut_off(1600);
-}
+{}
 
 void Speaker::set_volume(uint8_t volume)
 {