chore: remove confusing slurm-related code

[stoksc]

Ticket

Description

This code clones dev-scripts to get slurmcluster. Unfortunately there are two things named slurmcluster and it doesn't need the one (the gcp slurm tests run make -C tools/slurm slurmcluster which lives entirely within the repo).

Test Plan

Needs no tests.

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.

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 48.61%. Comparing base (3cbe805) to head (e28944c).
Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #9417   +/-   ##
=======================================
  Coverage   48.61%   48.61%           
=======================================
  Files        1233     1233           
  Lines      158958   158958           
  Branches     2778     2777    -1     
=======================================
  Hits        77282    77282           
  Misses      81502    81502           
  Partials      174      174           

Flag	Coverage Δ
backend	42.17% <ø> (ø)
harness	64.02% <ø> (ø)
web	44.40% <ø> (ø)

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

see 2 files with indirect coverage changes

[eecsliu]

looks good!

[dannysauer]

less confusion is more better.

[stoksc]

gonna, as usual, land over unrelated failures