Reformat imports to a consistent style for imports

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

client/src/rpc_request.rs

@@ -267,9 +267,11 @@ pub enum TokenAccountsFilter {
 
 #[cfg(test)]
 mod tests {
-    use super::*;
-    use crate::rpc_config::RpcTokenAccountsFilter;
-    use solana_sdk::commitment_config::{CommitmentConfig, CommitmentLevel};
+    use {
+        super::*,
+        crate::rpc_config::RpcTokenAccountsFilter,
+        solana_sdk::commitment_config::{CommitmentConfig, CommitmentLevel},
+    };
 
     #[test]
     fn test_build_request_json() {