Button close does not exist in the NoFramework Component

[DhiaEddineSaidi]

Issue type

I'm submitting a (check one):
[x] Bug report
[ ] Feature request
[ ] Regression (something that used to work, but stopped working in a newer version)
[ ] Support request
[ ] Documentation issue or request

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Current behavior

Whenever choosing the NoFramework , displayed items of array layout can not be closed .
Button close does not exist in a NoFramework Component, so you can add items but you can not delete.

Expected behavior

Button close must exist in items of a displayed array to be able to delete any item.

IMPORTANT: How can we reproduce your problem?

I order to reproduce this issue , open the demo , select "None (plain HTML)" in the "Selected Framework and Options" section.
No button close in any item of type phone_number [you ca not delete a phone number].
https://angular2-json-schema-form.firebaseapp.com/

Environment

OS name & version: any
Browser name & version: any
Angular version: 5.2
Angular JSON Schema Form version(s): "0.7.0-alpha.1" & master(branch)
Other relevant software or packages: none

Any other relevant information