Remove spring-boot from the feast serving application

[achals]

Signed-off-by: Achal Shah [email protected]

What this PR does / why we need it:

Which issue(s) this PR fixes:

Fixes #

Does this PR introduce a user-facing change?:

Removes spring-boot from the feast serving application

[feast-ci-bot]

Skipping CI for Draft Pull Request.
If you want CI signal for your change, please convert it to an actual PR.
You can still manually trigger a test run with /test all

[codecov-commenter]

Codecov Report

Merging #2127 (9a56204) into master (a710cb9) will increase coverage by 0.19%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master    #2127      +/-   ##
==========================================
+ Coverage   84.39%   84.59%   +0.19%     
==========================================
  Files         101      102       +1     
  Lines        8133     8186      +53     
==========================================
+ Hits         6864     6925      +61     
+ Misses       1269     1261       -8     

Flag	Coverage Δ
integrationtests	74.24% <ø> (-0.45%)	⬇️
unittests	59.01% <ø> (+0.27%)	⬆️

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

Impacted Files	Coverage Δ
sdk/python/feast/infra/provider.py	89.90% <0.00%> (-0.75%)	⬇️
sdk/python/feast/infra/online_stores/sqlite.py	87.82% <0.00%> (-0.41%)	⬇️
sdk/python/feast/utils.py	100.00% <0.00%> (ø)
sdk/python/feast/on_demand_feature_view.py	99.21% <0.00%> (ø)
...n/tests/integration/registration/test_inference.py	100.00% <0.00%> (ø)
sdk/python/tests/unit/diff/test_fco_diff.py	100.00% <0.00%> (ø)
.../integration/online_store/test_universal_online.py	98.13% <0.00%> (+0.46%)	⬆️
sdk/python/feast/infra/offline_stores/redshift.py	88.57% <0.00%> (+0.47%)	⬆️
...python/feast/infra/offline_stores/offline_utils.py	92.07% <0.00%> (+0.58%)	⬆️
sdk/python/feast/type_map.py	73.17% <0.00%> (+0.63%)	⬆️
... and 3 more

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[feast-ci-bot]

[APPROVALNOTIFIER] This PR is APPROVED

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

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[pyalex]

/lgtm