diff --git a/sources/Application/WebPage/WebPage.php b/sources/Application/WebPage/WebPage.php
index ae1e42ee5..d6c884c35 100644
--- a/sources/Application/WebPage/WebPage.php
+++ b/sources/Application/WebPage/WebPage.php
@@ -2009,102 +2009,6 @@ JS;
 	}
 
 
-	/**
-	 * @deprecated 3.0.0 use {@link \Combodo\iTop\Application\UI\Base\Component\CollapsibleSection\CollapsibleSection}
-	 *
-	 * Adds init scripts for the collapsible sections
-	 */
-	protected function outputCollapsibleSectionInit()
-	{
-		if (!$this->bHasCollapsibleSection) {
-			return;
-		}
-
-		$this->add_script(<<<'EOD'
-function initCollapsibleSection(iSectionId, bOpenedByDefault, sSectionStateStorageKey)
-{
-var bStoredSectionState = JSON.parse(localStorage.getItem(sSectionStateStorageKey));
-var bIsSectionOpenedInitially = (bStoredSectionState == null) ? bOpenedByDefault : bStoredSectionState;
-
-if (bIsSectionOpenedInitially) {
-	$("#LnkCollapse_"+iSectionId).toggleClass("open");
-	$("#Collapse_"+iSectionId).toggle();
-}
-
-$("#LnkCollapse_"+iSectionId).on('click', function(e) {
-	localStorage.setItem(sSectionStateStorageKey, !($("#Collapse_"+iSectionId).is(":visible")));
-	$("#LnkCollapse_"+iSectionId).toggleClass("open");
-	$("#Collapse_"+iSectionId).slideToggle("normal");
-	e.preventDefault(); // we don't want to do anything more (see #1030 : a non wanted tab switching was triggered)
-});
-}
-EOD
-		);
-	}
-
-	/**
-	 * @deprecated 3.0.0 use {@link \Combodo\iTop\Application\UI\Base\Component\CollapsibleSection\CollapsibleSection}
-	 *
-	 * @param bool $bOpenedByDefault
-	 * @param string $sSectionStateStorageBusinessKey
-	 *
-	 * @param string $sSectionLabel
-	 *
-	 * @throws \Exception
-	 */
-	public function StartCollapsibleSection($sSectionLabel, $bOpenedByDefault = false, $sSectionStateStorageBusinessKey = '')
-	{
-		DeprecatedCallsLog::NotifyDeprecatedPhpMethod('use \\Combodo\\iTop\\Application\\UI\\Base\\Component\\CollapsibleSection\\CollapsibleSection');
-		$this->add($this->GetStartCollapsibleSection($sSectionLabel, $bOpenedByDefault, $sSectionStateStorageBusinessKey));
-	}
-
-	/**
-	 * @deprecated 3.0.0 use {@link \Combodo\iTop\Application\UI\Base\Component\CollapsibleSection\CollapsibleSection}
-	 *
-	 * @param string $sSectionLabel
-	 * @param bool $bOpenedByDefault
-	 * @param string $sSectionStateStorageBusinessKey
-	 *
-	 * @return string
-	 *
-	 * @throws \Exception
-	 */
-	public function GetStartCollapsibleSection($sSectionLabel, $bOpenedByDefault = false, $sSectionStateStorageBusinessKey = '')
-	{
-		$this->bHasCollapsibleSection = true;
-		$sHtml = '';
-		static $iSectionId = 0;
-		$sHtml .= '<a id="LnkCollapse_'.$iSectionId.'" class="CollapsibleLabel" href="#">'.$sSectionLabel.'</a></br>'."\n";
-		$sHtml .= '<div id="Collapse_'.$iSectionId.'" style="display:none">'."\n";
-
-		$oConfig = MetaModel::GetConfig();
-		$sSectionStateStorageKey = $oConfig->GetItopInstanceid().'/'.$sSectionStateStorageBusinessKey.'/collapsible-'.$iSectionId;
-		$sSectionStateStorageKey = json_encode($sSectionStateStorageKey);
-		$sOpenedByDefault = ($bOpenedByDefault) ? 'true' : 'false';
-		$this->add_ready_script("initCollapsibleSection($iSectionId, $sOpenedByDefault, '$sSectionStateStorageKey');");
-
-		$iSectionId++;
-
-		return $sHtml;
-	}
-
-	/**
-	 * @deprecated 3.0.0 use {@link \Combodo\iTop\Application\UI\Base\Component\CollapsibleSection\CollapsibleSection}
-	 */
-	public function EndCollapsibleSection()
-	{
-		$this->add($this->GetEndCollapsibleSection());
-	}
-
-	/**
-	 * @deprecated 3.0.0 use {@link \Combodo\iTop\Application\UI\Base\Component\CollapsibleSection\CollapsibleSection}
-	 *
-	 * @return string
-	 */
-	public function GetEndCollapsibleSection()
-	{
-		return "</div>";
-	}
 
 	/**
 	 * Return the language for the page metadata based on the current user