remove sound_pwm now

r65emu.h

@@ -17,6 +17,5 @@
 #include "timed.h"
 #include "hardware.h"
 #include "sound_dac.h"
-#include "sound_pwm.h"
 
 #endif

sound_pwm.cpp

@@ -1,16 +0,0 @@
-#include <Arduino.h>
-#include "sound_pwm.h"
-
-static unsigned gpio;
-
-void PWM::begin(unsigned gpio) {
-	::gpio = gpio;
-}
-
-void PWM::stop() {
-	noTone(gpio);
-}
-
-void PWM::start(unsigned freq) {
-	tone(gpio, freq);
-}

sound_pwm.h

@@ -1,11 +0,0 @@
-#ifndef __SOUND_PWM_H__
-#define __SOUND_PWM_H__
-
-class PWM {
-public:
-	void begin(unsigned gpio);
-	void stop();
-	void start(unsigned freq);
-};
-
-#endif