Updated blooms-db to rust 2018 and removed redundant deps (#10785)

Cargo.lock

@@ -254,11 +254,9 @@ dependencies = [
 name = "blooms-db"
 version = "0.1.0"
 dependencies = [
- "byteorder 1.2.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "ethbloom 0.6.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "parking_lot 0.7.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "tempdir 0.3.7 (registry+https://github.com/rust-lang/crates.io-index)",
- "tiny-keccak 1.4.2 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]

util/blooms-db/Cargo.toml

@@ -3,12 +3,11 @@ name = "blooms-db"
 version = "0.1.0"
 license = "GPL-3.0"
 authors = ["Parity Technologies <admin@parity.io>"]
+edition = "2018"
 
 [dependencies]
-byteorder = "1.2"
 ethbloom = "0.6.4"
 parking_lot = "0.7"
-tiny-keccak = "1.4"
 
 [dev-dependencies]
 tempdir = "0.3"

util/blooms-db/src/db.rs

@@ -16,10 +16,8 @@
 
 use std::{error, io, fmt};
 use std::path::{Path, PathBuf};
-
 use ethbloom;
-
-use file::{File, FileIterator};
+use crate::file::{File, FileIterator};
 
 fn other_io_err<E>(e: E) -> io::Error where E: Into<Box<error::Error + Send + Sync>> {
 	io::Error::new(io::ErrorKind::Other, e)

util/blooms-db/src/file.rs

@@ -17,7 +17,6 @@
 use std::io::{Seek, SeekFrom, Write, Read};
 use std::path::Path;
 use std::{io, fs};
-
 use ethbloom;
 
 /// Autoresizable file containing blooms.

util/blooms-db/src/lib.rs

@@ -16,19 +16,12 @@
 
 //! Ethereum blooms database
 
-extern crate byteorder;
-extern crate ethbloom;
-extern crate parking_lot;
-extern crate tiny_keccak;
-
-#[cfg(test)]
-extern crate tempdir;
-
 mod db;
 mod file;
 
 use std::io;
 use std::path::Path;
+use ethbloom;
 use parking_lot::Mutex;
 
 /// Threadsafe API for blooms database.