Remove testers from contributors
Remove testers from contributors

PeterDaveHello/cryptocat,wakermahmud/cryptocat,DoNotUseThisCodeJUSTFORKS/cryptocat,DoNotUseThisCodeJUSTFORKS/cryptocat,Cryptodog/cryptocat,DoNotUseThisCodeJUSTFORKS/cryptocat,wakermahmud/cryptocat,PeterDaveHello/cryptocat,Cryptodog/cryptocat,Raynes/cryptocat,DGO143/cryptocat,DGO143/cryptocat,Raynes/cryptocat,arno01/cryptocat,Raynes/cryptocat,arno01/cryptocat,DGO143/cryptocat