Remove Training process mode

arkindex/documents/deletion.py

arkindex/documents/fixtures/data.json

arkindex/documents/managers.py

...move_process_model_remove_process_test_folder_and_more.py

arkindex/process/models.py

arkindex/process/serializers/imports.py

arkindex/process/serializers/worker_runs.py

arkindex/process/tests/test_corpus_worker_runs.py

arkindex/process/tests/test_create_process.py

arkindex/process/tests/test_processes.py

arkindex/process/tests/test_user_workerruns.py

arkindex/process/tests/test_workerruns.py

arkindex/sql_validation/element_dot_delete.sql

arkindex/sql_validation/element_trash_children.sql

arkindex/sql_validation/element_trash_deep.sql

arkindex/sql_validation/element_trash_ml_class.sql

arkindex/sql_validation/element_trash_no_children.sql

arkindex/sql_validation/process_elements_filter_ml_class.sql

arkindex/sql_validation/process_elements_filter_type.sql

arkindex/sql_validation/process_elements_top_level.sql