Remove unused flag
Remove unused flag

bluebore/dfs,myawan/bfs-1,yvxiang/coverage_for_bfs,yvxiang/coverage_for_bfs,linyvxiang/dfs,yvxiang/dfs,imotai/bfs,bluebore/dfs,baidu/bfs,baidu/bfs,bluebore/bfs,yvxiang/dfs,imotai/bfs,yvxiang/dfs,linyvxiang/dfs,bluebore/bfs,yvxiang/coverage_for_bfs,myawan/bfs-1,lylei/dfs,linyvxiang/dfs,myawan/bfs-1,bluebore/dfs,baidu/bfs,baidu/bfs,00k/ToyDFS,yvxiang/coverage_for_bfs,00k/ToyDFS,bluebore/bfs,lylei/dfs,myawan/bfs-1,lylei/dfs,yvxiang/dfs,imotai/bfs,lylei/dfs