Remove deprecated treasury pallet calls

[chungquantin]

ISSUE

• Link to the issue: [FRAME] Remove deprecated calls from treasury pallet #3800

Deliverables

• remove deprecated calls; (d579b67)
• set explicit coded indexes for Error and Event enums, remove unused variants and keep the same indexes for the rest; (d579b67)
• remove unused Config's type parameters; (d579b67)
• remove irrelevant tests and adopt relevant using old api; (d579b67)
• remove benchmarks for removed calls; (1a3d5f1)
• prdoc (d579b67)
• remove deprecated methods from the treasury/README.md and add up-to-date dispatchable functions documentation (d579b67)
• remove deprecated weight functions (8f74134)

Separated to other issues

• remove storage items like Proposals and ProposalCount, that are not used anymore

Adjust all treasury pallet instances within polkadot-sdk

• pallet_bounty, tip, child_bounties: Update deprecated treasury pallet code in the bounty, tip and child_bounties  openguild-labs/polkadot-sdk#3
• Remove deprecated treasury weight functions used in Westend and Rococo runtime collective-westend, collective-rococo

Add migration for westend and rococo to clean the data from removed storage items

• [FRAME] Remove storage migration type #3828

Test Outcomes

Successful tests by running cargo test --features runtime-benchmarks

running 38 tests
test tests::__construct_runtime_integrity_test::runtime_integrity_tests ... ok
test benchmarking::benchmarks::bench_check_status ... ok
test benchmarking::benchmarks::bench_payout ... ok
test benchmarking::benchmarks::bench_spend_local ... ok
test tests::accepted_spend_proposal_enacted_on_spend_period ... ok
test benchmarking::benchmarks::bench_spend ... ok
test tests::accepted_spend_proposal_ignored_outside_spend_period ... ok
test benchmarking::benchmarks::bench_void_spend ... ok
test benchmarking::benchmarks::bench_remove_approval ... ok
test tests::genesis_funding_works ... ok
test tests::genesis_config_works ... ok
test tests::inexistent_account_works ... ok
test tests::minting_works ... ok
test tests::check_status_works ... ok
test tests::payout_retry_works ... ok
test tests::pot_underflow_should_not_diminish ... ok
test tests::remove_already_removed_approval_fails ... ok
test tests::spend_local_origin_permissioning_works ... ok
test tests::spend_valid_from_works ... ok
test tests::spend_expires ... ok
test tests::spend_works ... ok
test tests::test_genesis_config_builds ... ok
test tests::spend_payout_works ... ok
test tests::spend_local_origin_works ... ok
test tests::spend_origin_works ... ok
test tests::spending_local_in_batch_respects_max_total ... ok
test tests::spending_in_batch_respects_max_total ... ok
test tests::try_state_proposals_invariant_2_works ... ok
test tests::try_state_proposals_invariant_1_works ... ok
test tests::try_state_spends_invariant_2_works ... ok
test tests::try_state_spends_invariant_1_works ... ok
test tests::treasury_account_doesnt_get_deleted ... ok
test tests::try_state_spends_invariant_3_works ... ok
test tests::unused_pot_should_diminish ... ok
test tests::void_spend_works ... ok
test tests::try_state_proposals_invariant_3_works ... ok
test tests::max_approvals_limited ... ok
test benchmarking::benchmarks::bench_on_initialize_proposals ... ok

test result: ok. 38 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.08s

   Doc-tests pallet_treasury

running 2 tests
test substrate/frame/treasury/src/lib.rs - (line 52) ... ignored
test substrate/frame/treasury/src/lib.rs - (line 79) ... ignored

test result: ok. 0 passed; 0 failed; 2 ignored; 0 measured; 0 filtered out; finished in 0.00s

polkadot address: 19nSqFQorfF2HxD3oBzWM3oCh4SaCRKWt1yvmgaPYGCo71J

[muharem]

we also need to remove storage items and update treasury pallet setups for the runtimes within this repo. for those runtimes we need to include storage migration to clean up the data for those removed storage items. there is probably some general migration type that allows to remove the whole storage item, I need to check this.
but if we do not have it, I can create an issue for it and we can work on it.

[muharem]

migration type for storage removal #3828

[muharem]

@chungquantin I think what is left

• remove storage items like Proposals and ProposalCount, that are not used anymore
• adjust all treasury pallet instances within polkadot-sdk
• add migration for westend and rococo to clean the data from removed storage items (I am about to merge this PR [FRAME] Remove storage migration type #3828). We can even check which removed storage items for westend and rococo has any data (the proposal count should be there)

also please make sure we do not break anything for dependant from this pallet the bounties and child bounties.

[chungquantin]

@muharem For Proposals and ProposalCount storage items, the current implementation of the spend_local and spend_fund method rely heavily on those item. Would you mean we do a refractor on those method to remove those storage items completely?

[muharem]

@muharem For Proposals and ProposalCount storage items, the current implementation of the spend_local and spend_fund method rely heavily on those item. Would you mean we do a refractor on those method to remove those storage items completely?

missed that. we can do it, but that is not what we want to achieve with this PR. lets just focus on deprecation. so we keep those storage items.

[chungquantin]

@muharem

Update pallet_bounty deprecated calls

Thank you for your feedback. I have added this sub PR to update the deprecated use of Treasury pallet in the pallet_bounty: openguild-labs#1

I have a few concerns:

• As the pallet_bounty low-level implementation still follow the logic of Propose -> Approve, should it follow the new logic declared in the pallet_treasury::spend_local. If yes, new issue can be created to deprecate the treasury pallet as well
• My other concerns are in here: https://github.com/openguild-labs/polkadot-sdk/pull/1/files/e14c706d9520c65ce60037fc727ac5de89a75f9f

Update pallet_treasury relevant code in other runtimes Westend, Rococo and Collective

• Link to issue: Remove weights in westend& rococo runtimes openguild-labs/polkadot-sdk#2

Could you please help me to review the sub PR if it is good to merge into this parent PR?

[muharem]

@chungquantin we should not change anything for child_bounties and bounties pallet. but only ensure that changes we introduce for treasury pallet do no break anything for those pallet. The OnSlash type for example, should not be removed, or the same type should be introduced for bounties and maybe child-bounties pallets.

I've seen #3890, we should basically have those changes in this PR, otherwise you never get CIs green. Same for bounties pallets.

[muharem]

@chungquantin are you still willing to finish this?

[chungquantin]

@muharem Yes I am working on it. Let me ship the code around tomorrow

[chungquantin]

@muharem It is good to go now. Could you please check?

[muharem]

almost there