[syncschema] don't arbitrarily remove constraints from the in-memory schema For some constraint types, it may make sense to have several constraints of that type simultaneously. In such a case, removing one of them from the in-memory schema is wrong. Closes #7446353

include *.py
include */*.py
recursive-include data *.gif *.png *.ico *.css *.js
recursive-include i18n *.po
recursive-include wdoc *