remove encoding for newer transition criterion until finalized

[mgarrard]

Summary: i introduced some backwards compatability issues because i added transition criterion to the encoder/decoder that were still in flux. I forgot that those would be added to newly created exp and then cause backwards compatability issues. This diff removes those

Reviewed By: lena-kashtelyan

Differential Revision: D50890889

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This pull request was exported from Phabricator. Differential Revision: D50890889

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (52c9018) 94.61% compared to head (c651172) 94.61%.

❗ Current head c651172 differs from pull request most recent head 154e264. Consider uploading reports for the commit 154e264 to get more accurate results

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1957      +/-   ##
==========================================
- Coverage   94.61%   94.61%   -0.01%     
==========================================
  Files         459      459              
  Lines       43645    43650       +5     
==========================================
+ Hits        41294    41298       +4     
- Misses       2351     2352       +1     

Files	Coverage Δ
ax/modelbridge/generation_strategy.py	95.16% <100.00%> (+0.02%)	⬆️
ax/service/tests/test_ax_client.py	98.97% <100.00%> (+<0.01%)	⬆️
ax/service/tests/test_scheduler.py	99.38% <100.00%> (-0.21%)	⬇️
ax/storage/json_store/decoder.py	87.28% <100.00%> (-0.17%)	⬇️
ax/storage/json_store/tests/test_json_store.py	94.38% <100.00%> (+0.12%)	⬆️
ax/storage/sqa_store/tests/test_sqa_store.py	99.01% <100.00%> (+<0.01%)	⬆️

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This pull request has been merged in cd564e4.