DOC: make the slurm docs more concise

[luweizheng]

What do these changes do?

Delete some redundant code in the SLURM deployment document page.

Check code requirements

• [ ] tests added / passed (if needed)
• [ ] Ensure all linting tests pass

[codecov[bot]]

Codecov Report

Merging #561 (f51b8f1) into main (e12329d) will increase coverage by 24.58%. The diff coverage is n/a.

@@             Coverage Diff             @@
##             main     #561       +/-   ##
===========================================
+ Coverage   68.72%   93.31%   +24.58%     
===========================================
  Files        1009     1009               
  Lines       78083    78083               
  Branches    16209    16209               
===========================================
+ Hits        53666    72863    +19197     
+ Misses      22249     3585    -18664     
+ Partials     2168     1635      -533     

Flag	Coverage Δ
unittests	93.21% <ø> (+24.56%)	:arrow_up:

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see 371 files with indirect coverage changes