Revert "modify PBD::TimingStats to discard the first 1000 recorded values to avoid too much influence from chaotic startup conditions"

This reverts commit 7bce9899c0.

1000 at 8192 samples @ 44.1 is > 3 mins; counter may have overflowed. Not a necessary change.

libs/pbd/pbd/timing.h

@@ -131,11 +131,8 @@ public:
 
 	void update ()
 	{
-		/* throw away the first 1000 values */
-		if (_update_cnt++ > 1000) {
-			Timing::update ();
-			calc ();
-		}
+		Timing::update ();
+		calc ();
 	}
 
 	/* interval computed externally */
@@ -158,7 +155,6 @@ public:
 		_avg = 0.;
 		_vm  = 0.;
 		_vs  = 0.;
-		_update_cnt = 0;
 	}
 
 	bool valid () const {
@@ -211,7 +207,6 @@ private:
 	double   _avg;
 	double   _vm;
 	double   _vs;
-	uint64_t   _update_cnt;
 };
 
 class LIBPBD_API TimerRAII