refactor: remove shard functions from epoch manager

[stedfn]

No description provided.

[codecov]

Codecov Report

Attention: Patch coverage is 74.42922% with 56 lines in your changes missing coverage. Please review.

Project coverage is 70.38%. Comparing base (c625d98) to head (4bf634e).
Report is 4 commits behind head on master.

Files with missing lines	Patch %	Lines
chain/epoch-manager/src/shard_tracker.rs	77.86%	6 Missing and 23 partials ⚠️
nearcore/src/entity_debug.rs	0.00%	8 Missing ⚠️
...chain/src/stateless_validation/chunk_validation.rs	50.00%	0 Missing and 4 partials ⚠️
tools/replay-archive/src/cli.rs	0.00%	4 Missing ⚠️
chain/chain/src/store/mod.rs	33.33%	0 Missing and 2 partials ⚠️
chain/chain/src/validate.rs	0.00%	0 Missing and 2 partials ⚠️
...src/stateless_validation/state_witness_producer.rs	77.77%	0 Missing and 2 partials ⚠️
tools/state-viewer/src/apply_chunk.rs	33.33%	0 Missing and 2 partials ⚠️
chain/chain/src/migrations.rs	0.00%	0 Missing and 1 partial ⚠️
chain/chunks/src/logic.rs	0.00%	0 Missing and 1 partial ⚠️
... and 1 more

Additional details and impacted files

@@            Coverage Diff             @@
##           master   #12843      +/-   ##
==========================================
- Coverage   70.41%   70.38%   -0.03%     
==========================================
  Files         848      848              
  Lines      174930   174764     -166     
  Branches   174930   174764     -166     
==========================================
- Hits       123169   123006     -163     
- Misses      46506    46513       +7     
+ Partials     5255     5245      -10     

Flag	Coverage Δ
backward-compatibility	0.16% <0.00%> (+<0.01%)	⬆️
db-migration	0.16% <0.00%> (+<0.01%)	⬆️
genesis-check	1.41% <0.00%> (+<0.01%)	⬆️
linux	69.99% <74.42%> (-0.03%)	⬇️
linux-nightly	70.02% <74.42%> (-0.04%)	⬇️
pytests	1.71% <0.00%> (+<0.01%)	⬆️
sanity-checks	1.53% <0.00%> (+<0.01%)	⬆️
unittests	70.21% <74.42%> (-0.03%)	⬇️
upgradability	0.20% <0.00%> (+<0.01%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

[pugachAG]

LGTM, thanks!