Reformat imports to a consistent style for imports

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

faucet/src/faucet.rs

@@ -492,9 +492,7 @@ impl LimitByTime for Pubkey {
 
 #[cfg(test)]
 mod tests {
-    use super::*;
-    use solana_sdk::system_instruction::SystemInstruction;
-    use std::time::Duration;
+    use {super::*, solana_sdk::system_instruction::SystemInstruction, std::time::Duration};
 
     #[test]
     fn test_check_time_request_limit() {

faucet/tests/local-faucet.rs

@@ -1,10 +1,12 @@
-use solana_faucet::faucet::{request_airdrop_transaction, run_local_faucet};
-use solana_sdk::{
-    hash::Hash,
-    message::Message,
-    signature::{Keypair, Signer},
-    system_instruction,
-    transaction::Transaction,
+use {
+    solana_faucet::faucet::{request_airdrop_transaction, run_local_faucet},
+    solana_sdk::{
+        hash::Hash,
+        message::Message,
+        signature::{Keypair, Signer},
+        system_instruction,
+        transaction::Transaction,
+    },
 };
 
 #[test]