chore: stop writing database down migrations [RM-242]

[NicholasBlaskey]

Ticket

Description

Stop writing down migrations because the time verse value tradeoff isn't there.

Test Plan

CI passes, also create a migration and check that it works incrementally

Checklist

• Changes have been manually QA'd
• User-facing API changes need the "User-facing API Change" label.
• Release notes should be added as a separate file under docs/release-notes/.
  See Release Note for details.
• Licenses should be included for new code which was copied and/or modified from any external code.

[netlify]

✅ Deploy Preview for determined-ui canceled.

Name	Link
🔨 Latest commit	ddde39b
🔍 Latest deploy log	https://app.netlify.com/sites/determined-ui/deploys/6633a0555897d900092a5bb0

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 3 lines in your changes are missing coverage. Please review.

Project coverage is 44.59%. Comparing base (21f76e9) to head (ddde39b).

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #9289      +/-   ##
==========================================
- Coverage   44.59%   44.59%   -0.01%     
==========================================
  Files        1275     1275              
  Lines      156226   156229       +3     
  Branches     2451     2451              
==========================================
+ Hits        69674    69675       +1     
- Misses      86312    86314       +2     
  Partials      240      240              

Flag	Coverage Δ
backend	41.78% <0.00%> (-0.01%)	⬇️
harness	64.09% <ø> (ø)
web	35.00% <ø> (ø)

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

Files	Coverage Δ
master/cmd/determined-master/migrate.go	16.00% <0.00%> (-2.19%)	⬇️

... and 3 files with indirect coverage changes