Remove unneeded link library.
Remove unneeded link library.

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