Allow the same account to be passed multiple times to a single instruction (#7795)

runtime/benches/message_processor.rs

@@ -7,14 +7,6 @@ use solana_runtime::message_processor::*;
 use solana_sdk::{account::Account, pubkey::Pubkey};
 use test::Bencher;
 
-#[bench]
-fn bench_has_duplicates(bencher: &mut Bencher) {
-    bencher.iter(|| {
-        let data = test::black_box([1, 2, 3]);
-        assert!(!has_duplicates(&data));
-    })
-}
-
 #[bench]
 fn bench_verify_account_changes_data(bencher: &mut Bencher) {
     solana_logger::setup();