When removing a field from the layout of an entry type, the field is still accessible

[Luuc15]

Description

When removing a field from the layout of an entry type, the field is still accessible.

Steps to reproduce

1. Add a field to a sections entry type layout
2. Fill in the field when editing an entry with that entry type
3. Display the content of the field in a template (like {{ entry.mycustomfield }} )
4. Remove the field from the layout of the entry type, but do not delete the field in the overview with all fields.
5. When displaying the template again the field is still accessible

What would be logical is that the field does not exist anymore for the entry and the content is removed.

Additional info

• Craft version: 3.0.0-beta.23 - 2017-07-28
• PHP version: 7.0.15
• Database driver & version: Mysql version 5.6.35
• Plugins & versions: No plugins

[brandonkelly]

This is intended behavior (for now), but will change when we implement #1524.