Remove unused API (Input Metering)

Input metering is now handled by Track::prep_record_enabled()
explicitly setting meter positions.

libs/ardour/ardour/route.h

@@ -141,8 +141,6 @@ public:
 	MonitorState monitoring_state () const;
 	virtual MonitorState get_auto_monitoring_state () const { return MonitoringSilence; }
 
-	virtual MeterState metering_state () const;
-
 	/* these are the core of the API of a Route. see the protected sections as well */
 
 	virtual void filter_input (BufferSet &) {}

libs/ardour/ardour/track.h

@@ -64,8 +64,6 @@ public:
 
 	TrackMode mode () const { return _mode; }
 
-	MeterState metering_state () const;
-
 	bool set_processor_state (XMLNode const& node, int version, XMLProperty const* prop, ProcessorList& new_order, bool& must_configure);
 
 	bool declick_in_progress () const;

libs/ardour/ardour/types.h

@@ -469,11 +469,6 @@ enum MonitorState {
 	MonitoringCue = 0x6,
 };
 
-enum MeterState {
-	MeteringInput, ///< meter the input IO, regardless of what is going through the route
-	MeteringRoute  ///< meter what is going through the route
-};
-
 enum VUMeterStandard {
 	MeteringVUfrench,   ///< 0VU = -2dBu
 	MeteringVUamerican, ///< 0VU =  0dBu

libs/ardour/route.cc

@@ -5249,15 +5249,6 @@ Route::processor_by_id (PBD::ID id) const
 	return boost::shared_ptr<Processor> ();
 }
 
-/** @return what we should be metering; either the data coming from the input
- *  IO or the data that is flowing through the route.
- */
-MeterState
-Route::metering_state () const
-{
-	return MeteringRoute;
-}
-
 bool
 Route::can_freeze_processor (boost::shared_ptr<Processor> p, bool allow_routing) const
 {

libs/ardour/track.cc

@@ -827,20 +827,6 @@ Track::monitoring_changed (bool, Controllable::GroupControlDisposition)
 	}
 }
 
-MeterState
-Track::metering_state () const
-{
-	bool rv;
-	if (_session.transport_rolling ()) {
-		// audio_track.cc || midi_track.cc roll() runs meter IFF:
-		rv = _meter_point == MeterInput && ((_monitoring_control->monitoring_choice() & MonitorInput) || _disk_writer->record_enabled());
-	} else {
-		// track no_roll() always metering if
-		rv = _meter_point == MeterInput;
-	}
-	return rv ? MeteringInput : MeteringRoute;
-}
-
 bool
 Track::set_processor_state (XMLNode const& node, int version, XMLProperty const* prop, ProcessorList& new_order, bool& must_configure)
 {