T198492: Drop rev_text_id and ar_text_id when running update.php

Phabricator Link	T198492
Status	open
Priority	normal (orange)
Author	[1]
Owner
Projects	Multi-Content-Revisions (Tech Debt) Wikidata (incoming) MW-1.35-release (Blocker) CPT Initiatives (MCR Schema Migration)
Subtasks	T198557: Remove the ability to write pre-MCR fields, limit the ability to read pre-MCR fields to migration scripts
Parent Tasks	T174022: Implement multi-content revisions T174043: Deploy Multi-Content Revisions
Tags

Property "Author" has a restricted application area and cannot be used as annotation property by a user.