[core] Removed redundant srt namespace scope resolution in CUDT
[core] Removed redundant srt namespace scope resolution in CUDT

ethouris/srt,Haivision/srt,ethouris/srt,Cinegy/srt,ethouris/srt,Haivision/srt,Haivision/srt,Haivision/srt,ethouris/srt,Cinegy/srt,Cinegy/srt,Cinegy/srt