demux: mp4: remove old stream_Tell/stream_Read workarounds
demux: mp4: remove old stream_Tell/stream_Read workarounds

xkfz007/vlc,xkfz007/vlc,xkfz007/vlc,xkfz007/vlc,xkfz007/vlc,xkfz007/vlc,xkfz007/vlc