From 92ca3911de27d46d995814f506c7c771df7bcba0 Mon Sep 17 00:00:00 2001
From: Vadim Smirnov <ukint-vs@proton.me>
Date: Wed, 7 Jun 2023 22:08:10 +0700
Subject: [PATCH] runtime(gear,vara): Remove unused migrations (#2728)

---
 runtime/common/src/lib.rs       |  1 -
 runtime/common/src/migration.rs | 63 ---------------------------------
 runtime/gear/src/migrations.rs  | 10 +-----
 runtime/vara/src/migrations.rs  |  4 ---
 4 files changed, 1 insertion(+), 77 deletions(-)
 delete mode 100644 runtime/common/src/migration.rs

diff --git a/runtime/common/src/lib.rs b/runtime/common/src/lib.rs
index de1f63347b2..8620bd086fd 100644
--- a/runtime/common/src/lib.rs
+++ b/runtime/common/src/lib.rs
@@ -20,7 +20,6 @@
 
 mod apis;
 pub mod constants;
-pub mod migration;
 pub mod weights;
 
 use frame_support::{
diff --git a/runtime/common/src/migration.rs b/runtime/common/src/migration.rs
deleted file mode 100644
index 9c92abf8aae..00000000000
--- a/runtime/common/src/migration.rs
+++ /dev/null
@@ -1,63 +0,0 @@
-// This file is part of Gear.
-//
-// Copyright (C) 2023 Gear Technologies Inc.
-// SPDX-License-Identifier: GPL-3.0-or-later WITH Classpath-exception-2.0
-//
-// This program is free software: you can redistribute it and/or modify
-// it under the terms of the GNU General Public License as published by
-// the Free Software Foundation, either version 3 of the License, or
-// (at your option) any later version.
-//
-// This program is distributed in the hope that it will be useful,
-// but WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-// GNU General Public License for more details.
-//
-// You should have received a copy of the GNU General Public License
-// along with this program. If not, see <https://www.gnu.org/licenses/>.
-
-//! Common runtime migrations.
-
-use frame_support::{
-    traits::{Get, OnRuntimeUpgrade},
-    weights::Weight,
-};
-use sp_std::marker::PhantomData;
-
-pub struct SessionValidatorSetMigration<T>(PhantomData<T>);
-
-impl<T> OnRuntimeUpgrade for SessionValidatorSetMigration<T>
-where
-    T: pallet_session::Config
-        + validator_set::Config<ValidatorId = <T as frame_system::Config>::AccountId>,
-{
-    fn on_runtime_upgrade() -> Weight {
-        log::info!("🚚 Running migration");
-
-        let mut weight = T::DbWeight::get().reads(
-            1 // read pallet session validators
-                + 1 // read validator set
-                + 1, // read approved validator set
-        );
-
-        let session_validators = pallet_session::Pallet::<T>::validators();
-        let validator_set = validator_set::Validators::<T>::get();
-        let approved_validator_set = validator_set::ApprovedValidators::<T>::get();
-
-        if session_validators == validator_set && session_validators == approved_validator_set {
-            log::info!("❌ Migration did not execute. This probably should be removed");
-        } else {
-            log::info!("Set {} validators", session_validators.len());
-
-            validator_set::Validators::<T>::put(session_validators.clone());
-            validator_set::ApprovedValidators::<T>::put(session_validators);
-
-            weight += T::DbWeight::get().writes(
-                1 // write validator set
-                    + 1, // write approved validator set
-            );
-        }
-
-        weight
-    }
-}
diff --git a/runtime/gear/src/migrations.rs b/runtime/gear/src/migrations.rs
index 665d7864102..b8c5b86f3d9 100644
--- a/runtime/gear/src/migrations.rs
+++ b/runtime/gear/src/migrations.rs
@@ -1,11 +1,3 @@
 use crate::*;
 
-use runtime_common::migration::SessionValidatorSetMigration;
-
-pub type Migrations = (
-    SessionValidatorSetMigration<Runtime>,
-    pallet_gear_gas::migrations::v1::MigrateToV1<Runtime>,
-    pallet_gear_scheduler::migration::MigrateToV2<Runtime>,
-    pallet_gear_program::migration::MigrateToV2<Runtime>,
-    pallet_gear_gas::migrations::v2::MigrateToV2<Runtime>,
-);
+pub type Migrations = (pallet_gear_gas::migrations::v2::MigrateToV2<Runtime>,);
diff --git a/runtime/vara/src/migrations.rs b/runtime/vara/src/migrations.rs
index 665d7864102..73b8929f447 100644
--- a/runtime/vara/src/migrations.rs
+++ b/runtime/vara/src/migrations.rs
@@ -1,11 +1,7 @@
 use crate::*;
 
-use runtime_common::migration::SessionValidatorSetMigration;
-
 pub type Migrations = (
-    SessionValidatorSetMigration<Runtime>,
     pallet_gear_gas::migrations::v1::MigrateToV1<Runtime>,
     pallet_gear_scheduler::migration::MigrateToV2<Runtime>,
-    pallet_gear_program::migration::MigrateToV2<Runtime>,
     pallet_gear_gas::migrations::v2::MigrateToV2<Runtime>,
 );