Fix review - removes all traces of Ongoing and TieredPercentage bounty types

[FlacoJones]

Removes the following contracts:

• OngoingBountyV1.sol
• TieredPercentageBountyV1.sol
• ITieredPercentageBounty.sol
• IOngoingBounty.sol
• OngoingBountyStorage.sol
• TieredPercentageBountyStorage.sol

Removes the following parameters from dependencies:

• BountyFactory::constructor removes _ongoingBountyBeacon and _tieredPercentageBountyBeacon

Removes the following constants from OpenQDefinitions.sol:

• uint32 internal constant ONGOING = 1;
• uint32 internal constant TIERED_PERCENTAGE = 2;

Removes the following methods from OpenQV1.sol:

• setPayout
• setPayoutSchedule
• closeOngoing
• solvent
• ongoingClaimed

Removes the following methods from ClaimManagerV1.sol:

• _eligibleToClaimOngoingBounty
• _claimOngoingBounty
• _claimTieredPercentageBounty
• bountyIsClaimable

Removes several if/else blocks in ClaimManagerV1.sol which previously called the internal _claim methods based on the bounty type equalling Ongoing or TieredPercentage

Adds function payoutTokenAddress() external returns (address); to ITieredFixedBounty.sol which was previously exposing the payoutTokenAddress storage variable via inheritance of the IOngoingBounty.sol which is now deprecated

Updates tests to pass without the Ongoing or TieredPercentage bounty types

Removes one test in DepositManager.test.js that checks that funding is not possible if the bounty is closed. This requirement will be removed in a follow up fix PR which you can find here

[IAm0x52]

Looks like you got everything. Will keep my eye out when reviewing the rest of the PRs for anything that might have been missed