Remove old FIXME/TODO comments from Structure.
Remove old FIXME/TODO comments from Structure.

Those function names will stay as they are and the extra methods
missing will be added in a future release.

nasserGanjali/QtGStreamer,knuesel/qt-gstreamer,shadeslayer/qtgstreamer,comicfans/libqtgstreamer,ylatuya/qt-gstreamer,GStreamer/qt-gstreamer,detrout/qt-gstreamer,iperry/qt-gstreamer,tswindell/qt-gstreamer,iperry/qt-gstreamer,freedesktop-unofficial-mirror/gstreamer__qt-gstreamer,dejunk/gstreamer,GStreamer/qt-gstreamer,ylatuya/qt-gstreamer,iperry/qt-gstreamer,nasserGanjali/QtGStreamer,comicfans/libqtgstreamer,knuesel/qt-gstreamer,ylatuya/qt-gstreamer,detrout/qt-gstreamer,freedesktop-unofficial-mirror/gstreamer__qt-gstreamer,shadeslayer/qtgstreamer,GStreamer/qt-gstreamer,freedesktop-unofficial-mirror/gstreamer__qt-gstreamer,dejunk/gstreamer,shadeslayer/qtgstreamer,cyndis/qtgstreamer,tswindell/qt-gstreamer,nasserGanjali/QtGStreamer,detrout/qt-gstreamer,comicfans/libqtgstreamer,cyndis/qtgstreamer,knuesel/qt-gstreamer,dejunk/gstreamer,cyndis/qtgstreamer,tswindell/qt-gstreamer