TowTrack and LegoAct2 destructors (#1005)

* Add some missing dtors

* Add missing 'override'

LEGO1/lego/legoomni/src/actors/towtrack.cpp

@@ -1,5 +1,6 @@
 #include "towtrack.h"
 
+#include "legocontrolmanager.h"
 #include "legogamestate.h"
 #include "legovariables.h"
 #include "legoworld.h"
@@ -25,6 +26,12 @@ TowTrack::TowTrack()
 	m_unk0x178 = 1.0;
 }
 
+// FUNCTION: LEGO1 0x1004c970
+TowTrack::~TowTrack()
+{
+	ControlManager()->Unregister(this);
+}
+
 // FUNCTION: LEGO1 0x1004c9e0
 // FUNCTION: BETA10 0x100f6bf1
 MxResult TowTrack::Create(MxDSAction& p_dsAction)