Refactor pallet-state-trie-migration to fungible::* traits (parit…

…ytech#1801)

## Summary

This PR consolidates `pallet-state-trie-migration` as a part of
paritytech#226 /
paritytech#171:

`pallet-state-trie-migration`:
- [x] replace `Currency` with `fungible` traits
- [x] run benchmarks
- [x] refactor to `DefaultConfig`

`pallet_nicks`:
- [x]  remove

others:
- [x] remove `as Fn*` or `asFun*` stuff based on discussion
[here](paritytech#226 (comment))

---------

Co-authored-by: Richard Melkonian <[email protected]>
Co-authored-by: command-bot <>

substrate/bin/node/runtime/src/lib.rs

@@ -533,7 +533,7 @@ impl pallet_balances::Config for Runtime {
 	type WeightInfo = pallet_balances::weights::SubstrateWeight<Runtime>;
 	type FreezeIdentifier = RuntimeFreezeReason;
 	type MaxFreezes = ConstU32<1>;
-	type MaxHolds = ConstU32<6>;
+	type MaxHolds = ConstU32<7>;
 }
 
 parameter_types! {
@@ -1901,6 +1901,7 @@ impl pallet_state_trie_migration::Config for Runtime {
 	type RuntimeEvent = RuntimeEvent;
 	type ControlOrigin = EnsureRoot<AccountId>;
 	type Currency = Balances;
+	type RuntimeHoldReason = RuntimeHoldReason;
 	type MaxKeyLen = MigrationMaxKeyLen;
 	type SignedDepositPerItem = MigrationSignedDepositPerItem;
 	type SignedDepositBase = MigrationSignedDepositBase;

substrate/frame/alliance/src/mock.rs

@@ -51,7 +51,7 @@ parameter_types! {
 #[derive_impl(frame_system::config_preludes::TestDefaultConfig as frame_system::DefaultConfig)]
 impl frame_system::Config for Test {
 	type Block = Block;
-	type AccountData = pallet_balances::AccountData<AccountId>;
+	type AccountData = pallet_balances::AccountData<u64>;
 }
 
 parameter_types! {