tool_brickfield\local\areas\core_question\answerbase::find_system_areas
tool_brickfield\local\areas\core_question\base::find_system_areas

No replacements. System context no longer a valid context to assign a question category

question_make_default_categories()

No longer creates a default category in either CONTEXT_SYSTEM, CONTEXT_COURSE, or CONTEXT_COURSECAT. Superceded by question_make_default_category which only accepts CONTEXT_MODULE.

question_delete_course()
question_delete_course_category()

No replacements. Courses and course categories no longer hold question categories.

qbank_bulkmove/helper::get_displaydata

Superceded by a modal and webservice, see qbank_bulkmove/modal_question_bank_bulkmove and core_question_external\move_questions

qbank_bulkmove\output\renderer::render_bulk_move_form

Superceded by qbank_bulkmove\output\bulk_move

question_type::generate_test

No replacement, not used by anywhere in core.