Algod: remove batch verification flag from the compact certs struct

[id-ms]

Summary

Nodes create the compact cert using falcon keys so the batch verification flag (related to the ed25519 scheme) is no longer necessary.

Test Plan

[codecov-commenter]

Codecov Report

Merging #3644 (e4093e8) into master (cbf1939) will increase coverage by 0.00%.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master    #3644   +/-   ##
=======================================
  Coverage   48.06%   48.07%           
=======================================
  Files         381      381           
  Lines       62080    62079    -1     
=======================================
+ Hits        29841    29842    +1     
+ Misses      28819    28817    -2     
  Partials     3420     3420           

Impacted Files	Coverage Δ
ledger/internal/compactcert.go	77.77% <ø> (-0.31%)	⬇️
ledger/blockqueue.go	82.18% <0.00%> (-2.88%)	⬇️
catchup/peerSelector.go	98.95% <0.00%> (-1.05%)	⬇️
network/wsNetwork.go	62.99% <0.00%> (-0.30%)	⬇️
ledger/internal/eval.go	71.87% <0.00%> (-0.29%)	⬇️
ledger/acctupdates.go	66.60% <0.00%> (+0.18%)	⬆️
network/wsPeer.go	68.33% <0.00%> (+0.27%)	⬆️
catchup/service.go	69.38% <0.00%> (+0.49%)	⬆️
data/transactions/verify/txn.go	45.02% <0.00%> (+0.86%)	⬆️
cmd/tealdbg/debugger.go	73.86% <0.00%> (+1.00%)	⬆️
... and 2 more

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