Remove lingering runtime upgrades (#6476)

* Remove lingering runtime upgrades

* remove unused warnings

* remove tests

Author: shawntabrizi

src/lib.rs

@@ -26,7 +26,7 @@ use sp_runtime::traits::{
 	StaticLookup, Member, LookupError, Zero, Saturating, AtLeast32Bit
 };
 use frame_support::{Parameter, decl_module, decl_error, decl_event, decl_storage, ensure};
-use frame_support::dispatch::{DispatchResult, Weight};
+use frame_support::dispatch::DispatchResult;
 use frame_support::traits::{Currency, ReservableCurrency, Get, BalanceStatus::Reserved};
 use frame_support::weights::constants::WEIGHT_PER_MICROS;
 use frame_system::{ensure_signed, ensure_root};
@@ -104,16 +104,6 @@ decl_module! {
 	pub struct Module<T: Trait> for enum Call where origin: T::Origin, system = frame_system {
 		fn deposit_event() = default;
 
-		fn on_runtime_upgrade() -> Weight {
-			use frame_support::migration::{StorageIterator, put_storage_value};
-			for (key, value) in StorageIterator::<
-				(T::AccountId, BalanceOf<T>)
-			>::new(b"Indices", b"Accounts").drain() {
-				put_storage_value(b"Indices", b"Accounts", &key, (value.0, value.1, false));
-			}
-			1_000_000_000
-		}
-
 		/// Assign an previously unassigned index.
 		///
 		/// Payment: `Deposit` is reserved from the sender account.