How to erase Datepublished?

Hello, I would like to erase the datepublished from the code, I mean this:

"datePublished": "2006-02-03T00:00:00+00:00", it is inside of:

<script type="application/ld+json">
{
"@context": "schema.org",
"@type": "WebPage",
"url": "www.viajoven.com",
"mainEntity": {
"@type": "DiscussionForumPosting",
"@id": "www.viajoven.com",
"headline": "estafa prix.com",
"datePublished"...

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