remove redundant friend class declaration in replica_stub
remove redundant friend class declaration in replica_stub

lshmouse/rDSN,ykwd/rDSN,shengofsun/rDSN,shengofsun/rDSN,imzhenyu/rDSN,ykwd/rDSN,ykwd/rDSN,pandaworrior/rDSN,mcfatealan/rDSN,lshmouse/rDSN,Microsoft/rDSN,imzhenyu/rDSN,lshmouse/rDSN,imzhenyu/rDSN,lshmouse/rDSN,lshmouse/rDSN,Microsoft/rDSN,glglwty/rDSN,qinzuoyan/rDSN,qinzuoyan/rDSN,qinzuoyan/rDSN,goksyli/rDSN,goksyli/rDSN,Microsoft/rDSN,pandaworrior/rDSN,shengofsun/rDSN,imzhenyu/rDSN,Microsoft/rDSN,glglwty/rDSN,lshmouse/rDSN,lshmouse/rDSN,ykwd/rDSN,mcfatealan/rDSN,shengofsun/rDSN,imzhenyu/rDSN,qinzuoyan/rDSN,Microsoft/rDSN,mcfatealan/rDSN,goksyli/rDSN,qinzuoyan/rDSN,Microsoft/rDSN,goksyli/rDSN,glglwty/rDSN,pandaworrior/rDSN,pandaworrior/rDSN,imzhenyu/rDSN,glglwty/rDSN,qinzuoyan/rDSN,Microsoft/rDSN,shengofsun/rDSN,lshmouse/rDSN,pandaworrior/rDSN,mcfatealan/rDSN,qinzuoyan/rDSN,ykwd/rDSN,imzhenyu/rDSN,Microsoft/rDSN,shengofsun/rDSN,qinzuoyan/rDSN,imzhenyu/rDSN,glglwty/rDSN,shengofsun/rDSN,shengofsun/rDSN