Drop Pending Stakers

[abi87]

Context and scope See https://github.com/avalanche-foundation/ACPs/blob/main/ACPs/41-remove-pending-stakers.md

Open questions How should we specify staking duration? In previous iterations we chose to specify duration as EndTime-StartTime. So StartTime and EndTime are non meaningful by themselves , but their difference is the duration that is validated and accepted. Current ACP chooses to specify EndTime, so that duration is EndTime - currentChainTime.

Structure Review PRs from Drop Pending Stakers 0 to Drop Pending Stakers 5

[github-actions[bot]]

This issue has become stale because it has been open 60 days with no activity. Adding the lifecycle/frozen label will cause this issue to ignore lifecycle events.