Reformat imports to a consistent style for imports

rustfmt.toml configuration:
        imports_granularity = "One"
         group_imports = "One"

ledger-tool/src/main.rs

@@ -16,13 +16,13 @@ use {
             is_parsable, is_pubkey, is_pubkey_or_keypair, is_slot, is_valid_percentage,
         },
     },
-    solana_ledger::entry::Entry,
     solana_ledger::{
         ancestor_iterator::AncestorIterator,
         bank_forks_utils,
         blockstore::{create_new_ledger, Blockstore, PurgeType},
         blockstore_db::{self, AccessType, BlockstoreRecoveryMode, Column, Database},
         blockstore_processor::ProcessOptions,
+        entry::Entry,
         shred::Shred,
     },
     solana_runtime::{
@@ -31,8 +31,7 @@ use {
         cost_model::CostModel,
         cost_tracker::CostTracker,
         hardened_unpack::{open_genesis_config, MAX_GENESIS_ARCHIVE_UNPACKED_SIZE},
-        snapshot_utils,
-        snapshot_utils::{SnapshotVersion, DEFAULT_MAX_SNAPSHOTS_TO_RETAIN},
+        snapshot_utils::{self, SnapshotVersion, DEFAULT_MAX_SNAPSHOTS_TO_RETAIN},
     },
     solana_sdk::{
         account::{AccountSharedData, ReadableAccount, WritableAccount},

ledger-tool/tests/basic.rs

@@ -1,8 +1,8 @@
-use assert_cmd::prelude::*;
-use solana_ledger::create_new_tmp_ledger;
-use solana_ledger::genesis_utils::create_genesis_config;
-use std::process::Command;
-use std::process::Output;
+use {
+    assert_cmd::prelude::*,
+    solana_ledger::{create_new_tmp_ledger, genesis_utils::create_genesis_config},
+    std::process::{Command, Output},
+};
 
 fn run_ledger_tool(args: &[&str]) -> Output {
     Command::cargo_bin(env!("CARGO_PKG_NAME"))