update delete to match new ReqId scheme
update delete to match new ReqId scheme

laurenrother/riak,xuejianhai/riak,amyvmiwei/riak,xuejianhai/riak_search,basho/riak_search,elkingtonmcb/riak,glickbot/riak,basho/riak_search,DavidAlphaFox/riak,biddyweb/riak,basho/riak,planobe/riak,planobe/riak,wwezhuimeng/riak_search,GabrielNicolasAvellaneda/riak,wwezhuimeng/riak_search,yangchengjian/riak,xuejianhai/riak_search,authbox-lib/riak