Remove some dicts

[timothy-nunn]

Removes some of the dicts that are not too intertwined with bits of PROCESS. The remaining dicts should probably wait until we replace the input/output format because they cannot be easily substituted.

[codecov-commenter]

Codecov Report

❌ Patch coverage is 17.64706% with 42 lines in your changes missing coverage. Please review.
✅ Project coverage is 48.81%. Comparing base (ddcba6c) to head (81deab0).

Files with missing lines	Patch %	Lines
process/core/io/vary_run/tools.py	8.33%	33 Missing ⚠️
process/core/input.py	12.50%	7 Missing ⚠️
process/core/io/in_dat/base.py	71.42%	2 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #4387      +/-   ##
==========================================
- Coverage   48.85%   48.81%   -0.04%     
==========================================
  Files         151      151              
  Lines       29385    29356      -29     
==========================================
- Hits        14356    14331      -25     
+ Misses      15029    15025       -4     

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