[stateless_validation] Remove old state witness distribution mechanism

[shreyan-gupta]

This PR removes a bunch of things that were being used in the old way of distributing chunk state witness. Changes include

• Rename ProcessChunkStateWitnessMessage to ChunkStateWitnessMessage
• Remove verify_chunk_state_witness_signature in epoch manager
• Remove process_signed_chunk_state_witness and partially_validate_state_witness in client
• State witness actions doesn't use old mechanism for sending state witness
• Remove ChunkStateWitness network message
• Remove SignedEncodedChunkStateWitness

Note: Do not merge this till all nodes in forknet are deployed with the partial encoded state witness change

[codecov]

Codecov Report

Attention: Patch coverage is 62.50000% with 3 lines in your changes are missing coverage. Please review.

Project coverage is 71.27%. Comparing base (66031e2) to head (5ec9065).

Files	Patch %	Lines
...nt/src/stateless_validation/chunk_validator/mod.rs	66.66%	0 Missing and 1 partial ⚠️
...alidation/partial_witness/partial_witness_actor.rs	0.00%	0 Missing and 1 partial ⚠️
chain/network/src/network_protocol/mod.rs	0.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master   #11179      +/-   ##
==========================================
+ Coverage   71.24%   71.27%   +0.02%     
==========================================
  Files         784      784              
  Lines      157961   157847     -114     
  Branches   157961   157847     -114     
==========================================
- Hits       112539   112499      -40     
+ Misses      40567    40495      -72     
+ Partials     4855     4853       -2     

Flag	Coverage Δ
backward-compatibility	0.24% <0.00%> (+<0.01%)	⬆️
db-migration	0.24% <0.00%> (+<0.01%)	⬆️
genesis-check	1.38% <0.00%> (+<0.01%)	⬆️
integration-tests	37.31% <62.50%> (+0.05%)	⬆️
linux	68.79% <12.50%> (+0.05%)	⬆️
linux-nightly	70.72% <62.50%> (+0.07%)	⬆️
macos	52.38% <0.00%> (+0.05%)	⬆️
pytests	1.60% <0.00%> (+<0.01%)	⬆️
sanity-checks	1.39% <0.00%> (+<0.01%)	⬆️
unittests	65.70% <0.00%> (+0.05%)	⬆️
upgradability	0.29% <0.00%> (+<0.01%)	⬆️

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[shreyan-gupta]

Note: Do not merge till we deploy and check partial witness on forknet