Timer: remove unused method Synchronize()

src/Timer.cxx

@@ -22,8 +22,6 @@
 #include "AudioFormat.hxx"
 #include "system/Clock.hxx"
 
-#include <glib.h>
-
 #include <limits>
 
 #include <assert.h>
@@ -67,14 +65,3 @@ unsigned Timer::GetDelay() const
 
 	return delay;
 }
-
-void Timer::Synchronize() const
-{
-	int64_t sleep_duration;
-
-	assert(started);
-
-	sleep_duration = time - MonotonicClockUS();
-	if (sleep_duration > 0)
-		g_usleep(sleep_duration);
-}

src/Timer.hxx

@@ -42,8 +42,6 @@ public:
 	 * Returns the number of milliseconds to sleep to get back to sync.
 	 */
 	unsigned GetDelay() const;
-
-	void Synchronize() const;
 };
 
 #endif