Remove more global automation from MidiImport (#6605)

include/Song.h

@@ -283,7 +283,6 @@ public:
 
 
 	bpm_t getTempo();
-	AutomationClip * tempoAutomationClip() override;
 
 	AutomationTrack * globalAutomationTrack()
 	{
@@ -352,6 +351,11 @@ public:
 		return m_timeSigModel;
 	}
 
+	IntModel& tempoModel()
+	{
+		return m_tempoModel;
+	}
+
 	void exportProjectMidi(QString const & exportFileName) const;
 
 	inline void setLoadOnLaunch(bool value) { m_loadOnLaunch = value; }

include/TrackContainer.h

@@ -63,12 +63,6 @@ public:
 
 	void loadSettings( const QDomElement & _this ) override;
 
-
-	virtual AutomationClip * tempoAutomationClip()
-	{
-		return nullptr;
-	}
-
 	int countTracks( Track::TrackTypes _tt = Track::NumTrackTypes ) const;