Remove locked accounts

[pro-wh]

We expect not to need this feature.

[Yawning]

Will this break a dump/restore cycle?

[codecov]

Codecov Report

Merging #2753 into master will decrease coverage by 0.45%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master    #2753      +/-   ##
==========================================
- Coverage   62.89%   62.43%   -0.46%     
==========================================
  Files         384      384              
  Lines       36258    36253       -5     
==========================================
- Hits        22804    22635     -169     
- Misses      10579    10761     +182     
+ Partials     2875     2857      -18     

Impacted Files	Coverage Δ
...s-node/cmd/debug/txsource/workload/registration.go	0.00% <0.00%> (-74.44%)	⬇️
go/runtime/committee/committee.go	74.02% <0.00%> (-10.39%)	⬇️
...ompute/txnscheduler/algorithm/batching/batching.go	78.66% <0.00%> (-6.67%)	⬇️
go/common/cbor/codec.go	64.70% <0.00%> (-5.89%)	⬇️
...n/crypto/signature/signers/memory/memory_signer.go	71.42% <0.00%> (-4.77%)	⬇️
go/runtime/tagindexer/tagindexer.go	68.47% <0.00%> (-4.35%)	⬇️
go/worker/compute/txnscheduler/committee/node.go	60.18% <0.00%> (-4.02%)	⬇️
go/worker/common/p2p/p2p.go	67.56% <0.00%> (-3.61%)	⬇️
go/runtime/transaction/transaction.go	75.90% <0.00%> (-2.41%)	⬇️
go/worker/common/committee/group.go	80.32% <0.00%> (-1.32%)	⬇️
... and 21 more

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[pro-wh]

locked accounts will become unlocked. unless we hooked up the parser to error out on unknown fields.

incidentally, we never saw any public network use this feature