chore: remove harmless incubator refs

[amitmiran137]

SUMMARY

resolves #12286

BEFORE/AFTER SCREENSHOTS OR ANIMATED GIF

TEST PLAN

ADDITIONAL INFORMATION

• Has associated issue:
• Changes UI
• Requires DB Migration.
• Confirm DB Migration upgrade and downgrade tested.
• Introduces new feature or API
• Removes existing feature or API

[codecov-io]

Codecov Report

Merging #12289 (5426a31) into master (d4a854e) will decrease coverage by 0.18%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master   #12289      +/-   ##
==========================================
- Coverage   67.17%   66.99%   -0.19%     
==========================================
  Files        1002     1002              
  Lines       49231    49282      +51     
  Branches     5000     5003       +3     
==========================================
- Hits        33073    33017      -56     
- Misses      16035    16141     +106     
- Partials      123      124       +1     

Flag	Coverage Δ
cypress	51.39% <ø> (-0.01%)	⬇️
javascript	61.22% <ø> (-0.04%)	⬇️
python	63.92% <ø> (-0.29%)	⬇️

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

Impacted Files	Coverage Δ
...-frontend/src/components/Button/Button.stories.jsx	82.35% <ø> (ø)
.../src/dashboard/components/gridComponents/Chart.jsx	87.62% <ø> (ø)
superset-frontend/src/utils/downloadAsImage.ts	33.33% <ø> (ø)
superset/config.py	90.54% <ø> (ø)
superset/models/alerts.py	96.00% <ø> (ø)
superset/models/core.py	87.77% <ø> (-1.09%)	⬇️
superset/tasks/alerts/observer.py	100.00% <ø> (ø)
superset/tasks/schedules.py	76.36% <ø> (ø)
superset/utils/celery.py	96.42% <ø> (-3.58%)	⬇️
superset/utils/core.py	89.80% <ø> (ø)
... and 33 more

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[villebro]

Thanks for fixing this! I did my best to verify that the changes are valid, and looks valid throughout. I wouldn't be surprised if something has gone unnoticed/broken, but in that case we can fix with a follow-up PR.

Btw, there's a linting error that needs to be fixed, other than that LGTM.