message: [network] move socket_bench_server to dev-dependencies
  Closes:
  Approved by: metajack
diff: @@ -31,11 +31,11 @@ metrics = { path = "../common/metrics" }
  netcore = { path = "netcore" }
  noise = { path = "noise" }
  prost-ext = { path = "../common/prost-ext" }
  -socket_bench_server = { path = "socket_bench_server" }
  types = { path = "../types" }
  [dev-dependencies]
  criterion = "0.2.11"
  +socket_bench_server = { path = "socket_bench_server" }
  crypto = { path = "../crypto/crypto", features = ["testing"] }
  types = { path = "../types", features = ["testing"]}
  