Remove unused class History

[oyvindeide]

Issue
Drive by cleaning while working on seperate issue.

Pre review checklist

• 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

[oyvindeide]

test this please

[ManInFez]

Are you sure history observations are never used?

[oyvindeide]

Are you sure history observations are never used?

History observations are used, but this is not that. The only bit of production code that is actually being deleted is this:

    @staticmethod
    def get_source_string(history_source_type: HistorySourceEnum):
        """
        @type history_source_type: HistorySourceEnum
        @rtype: str
        """
        return History._get_source_string(history_source_type)

[codecov-commenter]

Codecov Report

Merging #2718 (263fb0a) into main (0d2f714) will increase coverage by 0.29%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##             main    #2718      +/-   ##
==========================================
+ Coverage   65.05%   65.35%   +0.29%     
==========================================
  Files         651      651              
  Lines       53634    53606      -28     
  Branches     4724     4733       +9     
==========================================
+ Hits        34892    35034     +142     
+ Misses      17260    17037     -223     
- Partials     1482     1535      +53     

Impacted Files	Coverage Δ
res/enkf/enkf_obs.py	72.63% <ø> (+2.09%)	⬆️
res/sched/__init__.py	100.00% <ø> (ø)
libres/lib/analysis/std_enkf.cpp	59.63% <0.00%> (-4.06%)	⬇️
ert_gui/simulation/run_dialog.py	75.70% <0.00%> (-0.71%)	⬇️
libres/lib/enkf/block_fs_driver.cpp	81.35% <0.00%> (-0.57%)	⬇️
libres/lib/analysis/ies/ies.cpp	56.25% <0.00%> (-0.12%)	⬇️
libres/lib/job_queue/lsf_driver.cpp	45.42% <0.00%> (-0.07%)	⬇️
libres/lib/include/ert/res_util/string.hpp	69.23% <0.00%> (ø)
libres/lib/res_util/block_fs.cpp	53.82% <0.00%> (+0.29%)	⬆️
libres/lib/analysis/enkf_linalg.cpp	46.37% <0.00%> (+0.66%)	⬆️
... and 8 more

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update 0d2f714...263fb0a. Read the comment docs.

[ManInFez]

LGTM