Kill dead code
Kill dead code

Summary: this is not used anywhere

Test Plan: compiles

Reviewers: yhchiang, sdong

Reviewed By: sdong

Subscribers: dhruba, leveldb

Differential Revision: https://reviews.facebook.net/D37053

vashstorm/rocksdb,bbiao/rocksdb,fengshao0907/rocksdb,alihalabyah/rocksdb,norton/rocksdb,JoeWoo/rocksdb,norton/rocksdb,jalexanderqed/rocksdb,tizzybec/rocksdb,RyanTech/rocksdb,makelivedotnet/rocksdb,OverlordQ/rocksdb,Vaisman/rocksdb,jalexanderqed/rocksdb,ryneli/rocksdb,kaschaeffer/rocksdb,ryneli/rocksdb,JackLian/rocksdb,norton/rocksdb,facebook/rocksdb,rDSN-Projects/rocksdb.replicated,wskplho/rocksdb,Andymic/rocksdb,temicai/rocksdb,IMCG/RcoksDB,wlqGit/rocksdb,alihalabyah/rocksdb,kaschaeffer/rocksdb,wat-ze-hex/rocksdb,Applied-Duality/rocksdb,wat-ze-hex/rocksdb,IMCG/RcoksDB,sorphi/rocksdb,NickCis/rocksdb,biddyweb/rocksdb,geraldoandradee/rocksdb,IMCG/RcoksDB,hobinyoon/rocksdb,ryneli/rocksdb,biddyweb/rocksdb,alihalabyah/rocksdb,OverlordQ/rocksdb,norton/rocksdb,norton/rocksdb,JoeWoo/rocksdb,NickCis/rocksdb,rDSN-Projects/rocksdb.replicated,facebook/rocksdb,luckywhu/rocksdb,caijieming-baidu/rocksdb,jalexanderqed/rocksdb,lgscofield/rocksdb,facebook/rocksdb,JohnPJenkins/rocksdb,wenduo/rocksdb,JackLian/rocksdb,sorphi/rocksdb,mbarbon/rocksdb,zhangpng/rocksdb,flabby/rocksdb,wlqGit/rocksdb,anagav/rocksdb,tsheasha/rocksdb,caijieming-baidu/rocksdb,tsheasha/rocksdb,wskplho/rocksdb,vmx/rocksdb,ryneli/rocksdb,bbiao/rocksdb,mbarbon/rocksdb,Applied-Duality/rocksdb,lgscofield/rocksdb,JohnPJenkins/rocksdb,ryneli/rocksdb,zhangpng/rocksdb,siddhartharay007/rocksdb,JackLian/rocksdb,anagav/rocksdb,JohnPJenkins/rocksdb,mbarbon/rocksdb,SunguckLee/RocksDB,dkorolev/rocksdb,sorphi/rocksdb,vmx/rocksdb,tizzybec/rocksdb,JohnPJenkins/rocksdb,temicai/rocksdb,vashstorm/rocksdb,wskplho/rocksdb,rDSN-Projects/rocksdb.replicated,luckywhu/rocksdb,dkorolev/rocksdb,facebook/rocksdb,SunguckLee/RocksDB,geraldoandradee/rocksdb,tsheasha/rocksdb,Andymic/rocksdb,skunkwerks/rocksdb,makelivedotnet/rocksdb,bbiao/rocksdb,OverlordQ/rocksdb,hobinyoon/rocksdb,geraldoandradee/rocksdb,fengshao0907/rocksdb,mbarbon/rocksdb,NickCis/rocksdb,hobinyoon/rocksdb,tsheasha/rocksdb,kaschaeffer/rocksdb,lgscofield/rocksdb,NickCis/rocksdb,wenduo/rocksdb,RyanTech/rocksdb,SunguckLee/RocksDB,luckywhu/rocksdb,skunkwerks/rocksdb,ylong/rocksdb,kaschaeffer/rocksdb,jalexanderqed/rocksdb,Vaisman/rocksdb,siddhartharay007/rocksdb,dkorolev/rocksdb,wlqGit/rocksdb,OverlordQ/rocksdb,Applied-Duality/rocksdb,flabby/rocksdb,OverlordQ/rocksdb,tsheasha/rocksdb,zhangpng/rocksdb,siddhartharay007/rocksdb,ylong/rocksdb,bbiao/rocksdb,IMCG/RcoksDB,JackLian/rocksdb,zhangpng/rocksdb,tizzybec/rocksdb,flabby/rocksdb,alihalabyah/rocksdb,wat-ze-hex/rocksdb,facebook/rocksdb,Andymic/rocksdb,jalexanderqed/rocksdb,Andymic/rocksdb,RyanTech/rocksdb,OverlordQ/rocksdb,ylong/rocksdb,hobinyoon/rocksdb,RyanTech/rocksdb,lgscofield/rocksdb,Vaisman/rocksdb,JoeWoo/rocksdb,wenduo/rocksdb,bbiao/rocksdb,tizzybec/rocksdb,JoeWoo/rocksdb,anagav/rocksdb,siddhartharay007/rocksdb,caijieming-baidu/rocksdb,anagav/rocksdb,vmx/rocksdb,SunguckLee/RocksDB,sorphi/rocksdb,wenduo/rocksdb,siddhartharay007/rocksdb,ylong/rocksdb,makelivedotnet/rocksdb,wat-ze-hex/rocksdb,facebook/rocksdb,ylong/rocksdb,zhangpng/rocksdb,jalexanderqed/rocksdb,bbiao/rocksdb,vashstorm/rocksdb,tsheasha/rocksdb,fengshao0907/rocksdb,temicai/rocksdb,biddyweb/rocksdb,RyanTech/rocksdb,dkorolev/rocksdb,vmx/rocksdb,flabby/rocksdb,rDSN-Projects/rocksdb.replicated,SunguckLee/RocksDB,Andymic/rocksdb,alihalabyah/rocksdb,Applied-Duality/rocksdb,dkorolev/rocksdb,Vaisman/rocksdb,tizzybec/rocksdb,wenduo/rocksdb,mbarbon/rocksdb,wlqGit/rocksdb,hobinyoon/rocksdb,skunkwerks/rocksdb,bbiao/rocksdb,temicai/rocksdb,sorphi/rocksdb,NickCis/rocksdb,tizzybec/rocksdb,wat-ze-hex/rocksdb,facebook/rocksdb,JohnPJenkins/rocksdb,Andymic/rocksdb,dkorolev/rocksdb,wenduo/rocksdb,anagav/rocksdb,anagav/rocksdb,biddyweb/rocksdb,JoeWoo/rocksdb,bbiao/rocksdb,caijieming-baidu/rocksdb,Vaisman/rocksdb,wlqGit/rocksdb,alihalabyah/rocksdb,SunguckLee/RocksDB,hobinyoon/rocksdb,Applied-Duality/rocksdb,tizzybec/rocksdb,rDSN-Projects/rocksdb.replicated,lgscofield/rocksdb,norton/rocksdb,sorphi/rocksdb,vashstorm/rocksdb,vashstorm/rocksdb,wskplho/rocksdb,vmx/rocksdb,IMCG/RcoksDB,OverlordQ/rocksdb,wskplho/rocksdb,caijieming-baidu/rocksdb,temicai/rocksdb,fengshao0907/rocksdb,vashstorm/rocksdb,temicai/rocksdb,hobinyoon/rocksdb,geraldoandradee/rocksdb,vmx/rocksdb,Andymic/rocksdb,vmx/rocksdb,biddyweb/rocksdb,hobinyoon/rocksdb,siddhartharay007/rocksdb,mbarbon/rocksdb,norton/rocksdb,kaschaeffer/rocksdb,luckywhu/rocksdb,tsheasha/rocksdb,JackLian/rocksdb,wlqGit/rocksdb,makelivedotnet/rocksdb,makelivedotnet/rocksdb,flabby/rocksdb,wlqGit/rocksdb,rDSN-Projects/rocksdb.replicated,ryneli/rocksdb,tsheasha/rocksdb,luckywhu/rocksdb,wat-ze-hex/rocksdb,zhangpng/rocksdb,wat-ze-hex/rocksdb,geraldoandradee/rocksdb,anagav/rocksdb,fengshao0907/rocksdb,IMCG/RcoksDB,Applied-Duality/rocksdb,sorphi/rocksdb,wenduo/rocksdb,siddhartharay007/rocksdb,JackLian/rocksdb,JohnPJenkins/rocksdb,kaschaeffer/rocksdb,Andymic/rocksdb,mbarbon/rocksdb,caijieming-baidu/rocksdb,biddyweb/rocksdb,zhangpng/rocksdb,geraldoandradee/rocksdb,flabby/rocksdb,vmx/rocksdb,wskplho/rocksdb,NickCis/rocksdb,wenduo/rocksdb,ryneli/rocksdb,skunkwerks/rocksdb,rDSN-Projects/rocksdb.replicated,caijieming-baidu/rocksdb,RyanTech/rocksdb,makelivedotnet/rocksdb,lgscofield/rocksdb,RyanTech/rocksdb,Vaisman/rocksdb,alihalabyah/rocksdb,JohnPJenkins/rocksdb,JackLian/rocksdb,JoeWoo/rocksdb,luckywhu/rocksdb,NickCis/rocksdb,skunkwerks/rocksdb,SunguckLee/RocksDB,geraldoandradee/rocksdb,makelivedotnet/rocksdb,ylong/rocksdb,skunkwerks/rocksdb,biddyweb/rocksdb,dkorolev/rocksdb,jalexanderqed/rocksdb,temicai/rocksdb,facebook/rocksdb,Vaisman/rocksdb,JoeWoo/rocksdb,fengshao0907/rocksdb,wat-ze-hex/rocksdb,fengshao0907/rocksdb,luckywhu/rocksdb,IMCG/RcoksDB,kaschaeffer/rocksdb,norton/rocksdb,SunguckLee/RocksDB,ylong/rocksdb,Applied-Duality/rocksdb,wskplho/rocksdb,flabby/rocksdb,skunkwerks/rocksdb,lgscofield/rocksdb,vashstorm/rocksdb