Remove duration from StreamInfo
Remove duration from StreamInfo

Change-Id: I72548e0ddb567afa3f0fc88883f8cad035398c59

shaka-project/shaka-player,tvoli/shaka-player,shaka-project/shaka-player,tvoli/shaka-player,shaka-project/shaka-player,tvoli/shaka-player,tvoli/shaka-player,shaka-project/shaka-player