Revert "N°2556 - Html sanitization preserve content of removed tags (except for a forbidden list)"

This reverts commit 746b47bb0e.
Revert "N°2556 - Repair CI"

This reverts commit 79909fadc0.

test/core/sanitizer/InlineImageMock.php

@@ -1,39 +0,0 @@
-<?php
-/**
- * Copyright (C) 2010-2020 Combodo SARL
- *
- *   This file is part of iTop.
- *
- *   iTop is free software; you can redistribute it and/or modify
- *   it under the terms of the GNU Affero General Public License as published by
- *   the Free Software Foundation, either version 3 of the License, or
- *   (at your option) any later version.
- *
- *   iTop is distributed in the hope that it will be useful,
- *   but WITHOUT ANY WARRANTY; without even the implied warranty of
- *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- *   GNU Affero General Public License for more details.
- *
- *   You should have received a copy of the GNU Affero General Public License
- *   along with iTop. If not, see <http: *www.gnu.org/licenses/>
- *
- */
-
-/**
- * Mock class used by @see \Combodo\iTop\Test\UnitTest\Core\HTMLDOMSanitizerTest
- *
- */
-class InlineImage
-{
-	private static $iCallCounter = 0;
-
-	public static function ProcessImageTag(DOMNode $oNode)
-	{
-		self::$iCallCounter++;
-	}
-
-	public static function GetCallCounter()
-	{
-		return self::$iCallCounter;
-	}
-}