Reformat imports to a consistent style for imports

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

program-test/tests/builtins.rs

@@ -1,11 +1,12 @@
-use solana_sdk::{
-    bpf_loader_upgradeable::{self, UpgradeableLoaderState},
-    signature::{Keypair, Signer},
-    transaction::Transaction,
+use {
+    solana_program_test::ProgramTest,
+    solana_sdk::{
+        bpf_loader_upgradeable::{self, UpgradeableLoaderState},
+        signature::{Keypair, Signer},
+        transaction::Transaction,
+    },
 };
 
-use solana_program_test::ProgramTest;
-
 #[tokio::test]
 async fn test_bpf_loader_upgradable_present() {
     // Arrange

program-test/tests/fuzz.rs

@@ -2,8 +2,15 @@ use {
     solana_banks_client::BanksClient,
     solana_program_test::{processor, ProgramTest},
     solana_sdk::{
-        account_info::AccountInfo, entrypoint::ProgramResult, hash::Hash, instruction::Instruction,
-        msg, pubkey::Pubkey, rent::Rent, signature::Keypair, signature::Signer, system_instruction,
+        account_info::AccountInfo,
+        entrypoint::ProgramResult,
+        hash::Hash,
+        instruction::Instruction,
+        msg,
+        pubkey::Pubkey,
+        rent::Rent,
+        signature::{Keypair, Signer},
+        system_instruction,
         transaction::Transaction,
     },
 };