remove extra YouTube example
remove extra YouTube example

stea4lth/TimelineJS,zstao/TimelineJS,NUKnightLab/TimelineJS,noikiy/TimelineJS,james-logan/TimelineJS,matt-edgedesign/Timelinejs,JoaquinSiabra/TimelineJS,ryekee/TimelineJS,landsurveyorsunited/TimelineJS,djaney/TimelineJS,djaney/TimelineJS,angeliaz/TimelineJS,pom95/timeline,zstao/TimelineJS,ycaihua/TimelineJS,stea4lth/TimelineJS,azeemmufti/TimelineJS,pom95/timeline,noikiy/TimelineJS,james-logan/TimelineJS,wangjun/TimelineJS,anxintiancai/TimelineJS,wangjun/TimelineJS,angeliaz/TimelineJS,cweems/tc_timeline,landsurveyorsunited/TimelineJS,zstao/TimelineJS,eldabbagh/TimelineJS,ryekee/TimelineJS,ycaihua/TimelineJS,djaney/TimelineJS,stea4lth/TimelineJS,deenjohn/TimelineJS,JoaquinSiabra/TimelineJS,LauraHilliger/TimelineJS,1modm/TimelineJS,landsurveyorsunited/TimelineJS,matt-edgedesign/Timelinejs,deenjohn/TimelineJS,NUKnightLab/TimelineJS,cweems/api-timeline-js,eldabbagh/TimelineJS,cweems/tc_timeline,wangjun/TimelineJS,CrossLead/TimelineJS,CrossLead/TimelineJS,anxintiancai/TimelineJS,NUKnightLab/TimelineJS,LauraHilliger/TimelineJS,1modm/TimelineJS,cweems/api-timeline-js,JoaquinSiabra/TimelineJS,ryekee/TimelineJS,james-logan/TimelineJS,matt-edgedesign/Timelinejs,anxintiancai/TimelineJS,pom95/timeline,LauraHilliger/TimelineJS,deenjohn/TimelineJS,ycaihua/TimelineJS,noikiy/TimelineJS,azeemmufti/TimelineJS,1modm/TimelineJS