chore: Killing auto assign / auto review since they add noise

[adchia]

What this PR does / why we need it:
This removes the noisy auto-assign of PRs + issues (including auto reviewers).

Which issue(s) this PR fixes:

Fixes #

[kevjumba]

/lgtm

[achals]

/lgtm

[feast-ci-bot]

[APPROVALNOTIFIER] This PR is APPROVED

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

The full list of commands accepted by this bot can be found here.

The pull request process is described here

Needs approval from an approver in each of these files:

• OWNERS [achals,adchia]

Approvers can indicate their approval by writing /approve in a comment
Approvers can cancel approval by writing /approve cancel in a comment

[codecov-commenter]

Codecov Report

Merging #2546 (92ad618) into master (1a00fdc) will decrease coverage by 23.89%.
The diff coverage is n/a.

@@             Coverage Diff             @@
##           master    #2546       +/-   ##
===========================================
- Coverage   81.49%   57.60%   -23.90%     
===========================================
  Files         141      140        -1     
  Lines       12011    11899      -112     
===========================================
- Hits         9788     6854     -2934     
- Misses       2223     5045     +2822     

Flag	Coverage Δ
integrationtests	?
unittests	57.60% <ø> (ø)

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

Impacted Files	Coverage Δ
.../integration/online_store/test_online_retrieval.py	16.84% <0.00%> (-80.00%)	⬇️
.../integration/online_store/test_universal_online.py	15.09% <0.00%> (-77.50%)	⬇️
...fline_store/test_universal_historical_retrieval.py	23.88% <0.00%> (-76.12%)	⬇️
sdk/python/tests/utils/online_read_write_test.py	19.35% <0.00%> (-74.20%)	⬇️
...gration/registration/test_feature_service_apply.py	31.25% <0.00%> (-68.75%)	⬇️
sdk/python/feast/infra/online_stores/redis.py	28.39% <0.00%> (-67.91%)	⬇️
sdk/python/tests/integration/e2e/test_usage_e2e.py	33.87% <0.00%> (-66.13%)	⬇️
...dk/python/tests/integration/e2e/test_validation.py	33.92% <0.00%> (-66.08%)	⬇️
sdk/python/tests/data/data_creator.py	34.78% <0.00%> (-65.22%)	⬇️
...s/integration/registration/test_universal_types.py	35.36% <0.00%> (-63.42%)	⬇️
... and 64 more

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update 1a00fdc...92ad618. Read the comment docs.