diff --git a/accounts-db/src/accounts_partition.rs b/accounts-db/src/accounts_partition.rs
index 05d3993adcfb70..01d6929c3e07e5 100644
--- a/accounts-db/src/accounts_partition.rs
+++ b/accounts-db/src/accounts_partition.rs
@@ -98,36 +98,6 @@ pub fn get_partition_from_slot_indexes(
     (start_partition_index, end_partition_index, partition_count)
 }
 
-/// used only by filler accounts in debug path
-/// previous means slot - 1, not parent
-// These functions/fields are only usable from a dev context (i.e. tests and benches)
-#[cfg(feature = "dev-context-only-utils")]
-pub fn variable_cycle_partition_from_previous_slot(
-    epoch_schedule: &EpochSchedule,
-    slot: Slot,
-) -> Partition {
-    // similar code to Bank::variable_cycle_partitions
-    let (current_epoch, current_slot_index) = epoch_schedule.get_epoch_and_slot_index(slot);
-    let (parent_epoch, mut parent_slot_index) =
-        epoch_schedule.get_epoch_and_slot_index(slot.saturating_sub(1));
-    let cycle_params = rent_single_epoch_collection_cycle_params(
-        current_epoch,
-        epoch_schedule.get_slots_in_epoch(current_epoch),
-    );
-
-    if parent_epoch < current_epoch {
-        parent_slot_index = 0;
-    }
-
-    let generated_for_gapped_epochs = false;
-    get_partition_from_slot_indexes(
-        cycle_params,
-        parent_slot_index,
-        current_slot_index,
-        generated_for_gapped_epochs,
-    )
-}
-
 /// return all end partition indexes for the given partition
 /// partition could be (0, 1, N). In this case we only return [1]
 ///  the single 'end_index' that covers this partition.
diff --git a/runtime/src/bank/tests.rs b/runtime/src/bank/tests.rs
index f9b846d85b1512..29dbdc2e5aeacd 100644
--- a/runtime/src/bank/tests.rs
+++ b/runtime/src/bank/tests.rs
@@ -1279,26 +1279,6 @@ fn test_rent_complex() {
     assert_eq!(bank.collected_rent.load(Relaxed), rent_collected);
 }
 
-fn test_rent_collection_partitions(bank: &Bank) -> Vec<Partition> {
-    let partitions = bank.rent_collection_partitions();
-    let slot = bank.slot();
-    if slot.saturating_sub(1) == bank.parent_slot() {
-        let partition = accounts_partition::variable_cycle_partition_from_previous_slot(
-            bank.epoch_schedule(),
-            bank.slot(),
-        );
-        assert_eq!(
-            partitions.last().unwrap(),
-            &partition,
-            "slot: {}, slots per epoch: {}, partitions: {:?}",
-            bank.slot(),
-            bank.epoch_schedule().slots_per_epoch,
-            partitions
-        );
-    }
-    partitions
-}
-
 #[test]
 fn test_rent_eager_across_epoch_without_gap() {
     let mut bank = create_simple_test_arc_bank(1).0;
@@ -1321,16 +1301,16 @@ fn test_rent_eager_across_epoch_without_gap_mnb() {
     genesis_config.cluster_type = ClusterType::MainnetBeta;
 
     let mut bank = Arc::new(Bank::new_for_tests(&genesis_config));
-    assert_eq!(test_rent_collection_partitions(&bank), vec![(0, 0, 32)]);
+    assert_eq!(bank.rent_collection_partitions(), vec![(0, 0, 32)]);
 
     bank = Arc::new(new_from_parent(bank));
-    assert_eq!(test_rent_collection_partitions(&bank), vec![(0, 1, 32)]);
+    assert_eq!(bank.rent_collection_partitions(), vec![(0, 1, 32)]);
     for _ in 2..32 {
         bank = Arc::new(new_from_parent(bank));
     }
-    assert_eq!(test_rent_collection_partitions(&bank), vec![(30, 31, 32)]);
+    assert_eq!(bank.rent_collection_partitions(), vec![(30, 31, 32)]);
     bank = Arc::new(new_from_parent(bank));
-    assert_eq!(test_rent_collection_partitions(&bank), vec![(0, 0, 64)]);
+    assert_eq!(bank.rent_collection_partitions(), vec![(0, 0, 64)]);
 }
 
 #[test]