Remove outdated tools

[maxnoe]

Remove the four tools discussed for removal here #1506

[codecov]

Codecov Report

Merging #1827 (f203b00) into master (6bd131a) will increase coverage by 0.42%.
The diff coverage is n/a.

❗ Current head f203b00 differs from pull request most recent head fee7ba2. Consider uploading reports for the commit fee7ba2 to get more accurate results

@@            Coverage Diff             @@
##           master    #1827      +/-   ##
==========================================
+ Coverage   91.68%   92.10%   +0.42%     
==========================================
  Files         190      186       -4     
  Lines       15004    14902     -102     
==========================================
- Hits        13756    13726      -30     
+ Misses       1248     1176      -72     

Impacted Files	Coverage Δ
ctapipe/reco/hillas_reconstructor.py	98.47% <ø> (ø)
ctapipe/reco/impact.py	44.98% <ø> (+0.19%)	⬆️
ctapipe/tools/tests/test_tools.py	100.00% <ø> (ø)
ctapipe/visualization/mpl_camera.py	91.21% <0.00%> (-0.24%)	⬇️
ctapipe/image/toymodel.py	100.00% <0.00%> (ø)
ctapipe/coordinates/__init__.py	100.00% <0.00%> (ø)
ctapipe/image/tests/test_toy.py	100.00% <0.00%> (ø)
ctapipe/core/tests/test_traits.py	100.00% <0.00%> (ø)
ctapipe/image/tests/test_hillas.py	100.00% <0.00%> (ø)
ctapipe/io/tests/test_toysource.py	100.00% <0.00%> (ø)
... and 60 more

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[kosack]

while I still use some of these for debugging and outreach, I think it's ok to drop them since now with the DL1/DL2 data model + ctapipe.io.TableLoader + Jupyter notebooks, it's easy to replicate all of this functionality, and often simpler.

[kosack]

Though I still like camdemo, as it's fun and a nice simple example of writing a Tool and using the InstrumentDescription model!

[maxnoe]

Though I still like camdemo, as it's fun and a nice simple example of writing a Tool and using the InstrumentDescription model!

Then should I move it to examples? Or the Tool documentation?

I am against having something that's just supposed to be a documentation example installed in PATH along with the "real" tools.