Remove extras from composer.json.
Remove extras from composer.json.

[ci skip]

RudyJessop/predis,lvbaosong/predis,WalterShe/predis,SwelenFrance/predis,CloudSide/predis,zhangyancoder/predis,mrkeng/predis,quangnguyen90/predis,SecureCloud-biz/predis,moria/predis,nrk/predis,protomouse/predis,gopalindians/predis,vend/predis,dzung2t/predis,gencer/predis,nguyenthaihan/predis