Disable vendor detection when upgrading from 11.0.x

Upgrade from 11 to 14 is not supported anyways.

Signed-off-by: Morris Jobke <hey@morrisjobke.de>

lib/private/Updater.php

@@ -182,16 +182,8 @@ class Updater extends BasicEmitter {
 		$currentVendor = $this->config->getAppValue('core', 'vendor', '');
 
 		// Vendor was not set correctly on install, so we have to white-list known versions
-		if ($currentVendor === '') {
-			if (in_array($oldVersion, [
-				'11.0.2.7',
-				'11.0.1.2',
-				'11.0.0.10',
-			], true)) {
-				$currentVendor = 'nextcloud';
-			} else if (isset($allowedPreviousVersions['owncloud'][$oldVersion])) {
-				$currentVendor = 'owncloud';
-			}
+		if ($currentVendor === '' && isset($allowedPreviousVersions['owncloud'][$oldVersion])) {
+			$currentVendor = 'owncloud';
 		}
 
 		if ($currentVendor === 'nextcloud') {