[views] remove reference to the MAPPING_CHECKERS dict (closes #3810219)
Was removed by by the changeset 65d93a4fd11c
([multi-sources-removal] Drop pyrorql and zmqrql sources)
Document: cubicweb-doc
Title: CubicWeb documentation
Author: Logilab
Abstract: Some base documentation for CubicWeb users and developpers
Section: Apps/Programming
Format: HTML
Index: /usr/share/doc/cubicweb-documentation/index.html
Files: /usr/share/doc/cubicweb-documentation/*.html