track: Make sure to remove the proper TrackObject from the GSequence
track: Make sure to remove the proper TrackObject from the GSequence

cfoch/ges,cfoch/gst-editing-services,volodymyrrudyi/gst-editing-services,cfoch/ges,cfoch/ges,pitivi/gst-editing-services,pitivi/gst-editing-services,pitivi/gst-editing-services,cfoch/gst-editing-services,cfoch/ges,cfoch/gst-editing-services,volodymyrrudyi/gst-editing-services,cfoch/gst-editing-services,pitivi/gst-editing-services,volodymyrrudyi/gst-editing-services