removed queued mixnet migration that was already run (#3872)

contracts/mixnet/src/contract.rs

@@ -606,7 +606,7 @@ pub fn query(
 
 #[entry_point]
 pub fn migrate(
-    mut deps: DepsMut<'_>,
+    deps: DepsMut<'_>,
     _env: Env,
     msg: MigrateMsg,
 ) -> Result<Response, MixnetContractError> {
@@ -632,7 +632,6 @@ pub fn migrate(
 
         // If state structure changed in any contract version in the way migration is needed, it
         // should occur here, for example anything from `crate::queued_migrations::`
-        crate::queued_migrations::insert_pending_pledge_changes(deps.branch())?;
     }
 
     // due to circular dependency on contract addresses (i.e. mixnet contract requiring vesting contract address

contracts/mixnet/src/queued_migrations.rs

@@ -1,42 +1,2 @@
 // Copyright 2022-2023 - Nym Technologies SA <contact@nymtech.net>
 // SPDX-License-Identifier: Apache-2.0
-
-use crate::interval::storage as interval_storage;
-use crate::mixnodes::storage as mixnodes_storage;
-use cosmwasm_std::DepsMut;
-use mixnet_contract_common::error::MixnetContractError;
-use mixnet_contract_common::mixnode::PendingMixNodeChanges;
-use mixnet_contract_common::PendingEpochEventKind;
-use std::collections::BTreeMap;
-
-pub fn insert_pending_pledge_changes(deps: DepsMut<'_>) -> Result<(), MixnetContractError> {
-    let last_executed = interval_storage::LAST_PROCESSED_EPOCH_EVENT.load(deps.storage)?;
-    let last_inserted = interval_storage::EPOCH_EVENT_ID_COUNTER.load(deps.storage)?;
-
-    let mut new_pending = BTreeMap::new();
-
-    for event_id in last_executed + 1..=last_inserted {
-        let event = interval_storage::PENDING_EPOCH_EVENTS.load(deps.storage, event_id)?;
-        match event.kind {
-            PendingEpochEventKind::PledgeMore { mix_id, .. }
-            | PendingEpochEventKind::DecreasePledge { mix_id, .. } => {
-                if new_pending.insert(mix_id, event_id).is_some() {
-                    return Err(MixnetContractError::FailedMigration { comment: format!("mixnode {mix_id} has more than a single pledge change pending for this epoch. Run this migration again after the epoch has finished.") });
-                }
-            }
-            _ => (),
-        }
-    }
-
-    for (mix_id, event_id) in new_pending {
-        mixnodes_storage::PENDING_MIXNODE_CHANGES.save(
-            deps.storage,
-            mix_id,
-            &PendingMixNodeChanges {
-                pledge_change: Some(event_id),
-            },
-        )?;
-    }
-
-    Ok(())
-}