Do not attempt to compute ODFVs when there are no ODFVs

[felixwang9817]

Signed-off-by: Felix Wang wangfelix98@gmail.com

What this PR does / why we need it: This PR ensures that we do not attempt to compute ODFVs in RetrievalJobs when there are no ODFVs.

Which issue(s) this PR fixes:

Fixes #2072

Does this PR introduce a user-facing change?:

NONE

[codecov-commenter]

Codecov Report

Merging #2090 (c8e0fc3) into master (54d0f3a) will decrease coverage by 25.35%.
The diff coverage is 60.00%.

@@             Coverage Diff             @@
##           master    #2090       +/-   ##
===========================================
- Coverage   83.44%   58.09%   -25.36%     
===========================================
  Files         100      100               
  Lines        8077     8077               
===========================================
- Hits         6740     4692     -2048     
- Misses       1337     3385     +2048     

Flag	Coverage Δ
integrationtests	?
unittests	58.09% <60.00%> (-0.02%)	⬇️

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

Impacted Files	Coverage Δ
sdk/python/feast/infra/offline_stores/bigquery.py	33.13% <0.00%> (-48.26%)	⬇️
sdk/python/feast/infra/offline_stores/redshift.py	41.46% <0.00%> (-45.53%)	⬇️
sdk/python/feast/infra/offline_stores/file.py	88.80% <100.00%> (-8.00%)	⬇️
...python/feast/infra/offline_stores/offline_store.py	72.91% <100.00%> (-14.59%)	⬇️
.../integration/online_store/test_universal_online.py	15.34% <0.00%> (-82.80%)	⬇️
.../integration/online_store/test_online_retrieval.py	17.39% <0.00%> (-82.61%)	⬇️
...fline_store/test_universal_historical_retrieval.py	19.29% <0.00%> (-80.12%)	⬇️
sdk/python/tests/utils/online_read_write_test.py	20.68% <0.00%> (-79.32%)	⬇️
...gration/registration/test_feature_service_apply.py	31.25% <0.00%> (-68.75%)	⬇️
sdk/python/feast/infra/online_stores/redis.py	26.97% <0.00%> (-67.11%)	⬇️
... and 53 more

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[feast-ci-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: achals, felixwang9817

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[achals]

/lgtm