Remove dead code from test_analysis_module

[dafeda]

Re-write to not depend on ResTest.

Issue
Resolves #2918

Pre review checklist

• [x ] Added appropriate labels

Adding labels helps the maintainers when writing release notes, see sections and the
corresponding labels here: https://github.com/equinor/ert/blob/main/.github/release.yml

[dafeda]

test this please

[dafeda]

test this please

[dafeda]

test this please

[codecov-commenter]

Codecov Report

Merging #2919 (757ca7a) into main (f14012d) will increase coverage by 0.23%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##             main    #2919      +/-   ##
==========================================
+ Coverage   65.16%   65.40%   +0.23%     
==========================================
  Files         650      648       -2     
  Lines       52625    52391     -234     
  Branches     4711     4674      -37     
==========================================
- Hits        34294    34264      -30     
+ Misses      16786    16580     -206     
- Partials     1545     1547       +2     

Impacted Files	Coverage Δ
ert_gui/ertwidgets/validationsupport.py	79.45% <0.00%> (-19.18%)	⬇️
ert_gui/ertwidgets/__init__.py	75.00% <0.00%> (-2.28%)	⬇️
libres/lib/enkf/enkf_main_ensemble.cpp	68.42% <0.00%> (-0.81%)	⬇️
libres/lib/res_util/block_fs.cpp	53.67% <0.00%> (-0.30%)	⬇️
libres/lib/enkf/data_ranking.cpp
libres/lib/enkf/ranking_table.cpp
ert_shared/status/tracker/legacy.py	87.83% <0.00%> (+1.58%)	⬆️
libres/lib/enkf/enkf_main.cpp	57.84% <0.00%> (+4.04%)	⬆️
libres/lib/enkf/enkf_main_jobs.cpp	19.57% <0.00%> (+4.29%)	⬆️
libres/lib/enkf/enkf_util.cpp	86.66% <0.00%> (+30.14%)	⬆️

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[dafeda]

test libres please

[dafeda]

test libres please

[dafeda]

test libres please