Field rev_text_id will no longer be populated once the legacy
schema is disabled, so joins against it will not work.
Remove all usages of the 'text' flag in calls to both
Revision::getQueryInfo() and RevisionStore::getQueryInfo()
so that these joins are no longer attempted.
Bug: T198342
Change-Id: I9be6a544c6f68555d4ea856f949f0040d05eac0f
