remove FOQS and Composite lead-acid models

[valentinsulzer]

Description

I don't think anyone is using these models, and they aren't much faster than the full model anyway. They are very different from the other models which makes them hard to maintain / large technical debt.

Let me know if you don't want these models removed (or you find this PR in future and want them added back in)

Type of change

Please add a line in the relevant section of CHANGELOG.md to document the change (include PR #) - note reverse order of PR #s. If necessary, also add to the list of breaking changes.

• New feature (non-breaking change which adds functionality)
• Optimization (back-end change that speeds up the code)
• Bug fix (non-breaking change which fixes an issue)

Key checklist:

• No style issues: $ flake8
• All tests pass: $ python run-tests.py --unit
• The documentation builds: $ cd docs and then $ make clean; make html

You can run all three at once, using $ python run-tests.py --quick.

Further checks:

• Code is commented, particularly in hard-to-understand areas
• Tests added that prove fix is effective or that feature works

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Codecov Report

Base: 99.71% // Head: 99.72% // Increases project coverage by +0.01% 🎉

Coverage data is based on head (5474f6e) compared to base (2b882d2).
Patch coverage: 100.00% of modified lines in pull request are covered.

Additional details and impacted files

@@             Coverage Diff             @@
##           develop    #2431      +/-   ##
===========================================
+ Coverage    99.71%   99.72%   +0.01%     
===========================================
  Files          267      258       -9     
  Lines        20044    19498     -546     
===========================================
- Hits         19987    19445     -542     
+ Misses          57       53       -4     

Impacted Files	Coverage Δ
pybamm/models/base_model.py	98.52% <ø> (ø)
...m/models/full_battery_models/lead_acid/__init__.py	100.00% <ø> (ø)
...ybamm/models/full_battery_models/lead_acid/loqs.py	100.00% <ø> (ø)
...bamm/models/full_battery_models/lithium_ion/dfn.py	100.00% <ø> (ø)
...bamm/models/full_battery_models/lithium_ion/spm.py	100.00% <ø> (ø)
...amm/models/full_battery_models/lithium_ion/spme.py	100.00% <ø> (ø)
...amm/models/submodels/current_collector/__init__.py	100.00% <ø> (ø)
...current_collector/homogeneous_current_collector.py	100.00% <ø> (ø)
...dels/submodels/current_collector/potential_pair.py	100.00% <ø> (ø)
...models/submodels/electrolyte_diffusion/__init__.py	100.00% <ø> (ø)
... and 25 more

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[brosaplanella]

Looks good, thanks!

[brosaplanella]

I just realised that I placed the asymmetric SEI line of the CHANGELOG in the 22.10 release. Can you move it to the unreleased? Sorry!

[valentinsulzer]

will do it in the other PR which needs a changelog