Revert "Reformat imports to a consistent style for imports"

This reverts commit 139d15cd84.

scripts/src/csv_to_validator_infos.rs

@@ -3,10 +3,10 @@
 // Usage:
 //   cargo run --bin solana-csv-to-validator-infos < validators.csv
 
-use {
-    serde::Deserialize,
-    std::{error::Error, io, process},
-};
+use serde::Deserialize;
+use std::error::Error;
+use std::io;
+use std::process;
 
 #[derive(Debug, Deserialize)]
 struct ValidatorRecord {