Clean ckan.validated_data_dict config

[pdelboca]

Currently CKAN has a strong dependency on validated_data_dict so config.get_value('ckan.cache_validated_datasets') option is now mandatory and cannot be set to False.

To review just set the config to False and running our test suit. It will throw hundreds of errors.

I'm removing the config to avoid confusion.

The failing test seems to be a random fail, but let me know if the opposite.

(.venv)  ~/Repos/ckan (clean-cache-validated-datasets-config)$ pytest --ckan-ini=test-core.ini --disable-warnings ckanext/datapusher/tests/
2022-01-10 19:34:22,481 CRITI [ckan.lib.uploader] Please specify a ckan.storage_path in your config
                         for your uploads
=========================================================================================== test session starts ===========================================================================================
platform linux -- Python 3.8.10, pytest-6.2.2, py-1.10.0, pluggy-0.13.1
rootdir: /home/pdelboca/Repos/ckan, configfile: pyproject.toml
plugins: rerunfailures-9.1.1, cov-2.11.1, factoryboy-2.1.0, split-tests-1.0.9, Faker-9.3.1, freezegun-0.4.2, pyfakefs-3.2
collected 14 items                                                                                                                                                                                        

ckanext/datapusher/tests/test_action.py .........                                                                                                                                                   [ 64%]
ckanext/datapusher/tests/test_default_views.py ..                                                                                                                                                   [ 78%]
ckanext/datapusher/tests/test_interfaces.py ..                                                                                                                                                      [ 92%]
ckanext/datapusher/tests/test_views.py .                                                                                                                                                            [100%]

=========================================================================================== 14 passed in 26.75s ===========================================================================================