debt: Delegate is-encrypted handling to the e2ee app

Signed-off-by: Louis Chemineau <louis@chmn.me>

Author: artonge

apps/dav/lib/Connector/Sabre/FilesPlugin.php

@@ -53,7 +53,6 @@ class FilesPlugin extends ServerPlugin {
 	public const HAS_PREVIEW_PROPERTYNAME = '{http://nextcloud.org/ns}has-preview';
 	public const MOUNT_TYPE_PROPERTYNAME = '{http://nextcloud.org/ns}mount-type';
 	public const MOUNT_ROOT_PROPERTYNAME = '{http://nextcloud.org/ns}is-mount-root';
-	public const IS_ENCRYPTED_PROPERTYNAME = '{http://nextcloud.org/ns}is-encrypted';
 	public const METADATA_ETAG_PROPERTYNAME = '{http://nextcloud.org/ns}metadata_etag';
 	public const UPLOAD_TIME_PROPERTYNAME = '{http://nextcloud.org/ns}upload_time';
 	public const CREATION_TIME_PROPERTYNAME = '{http://nextcloud.org/ns}creation_time';
@@ -121,7 +120,6 @@ public function initialize(Server $server) {
 		$server->protectedProperties[] = self::DATA_FINGERPRINT_PROPERTYNAME;
 		$server->protectedProperties[] = self::HAS_PREVIEW_PROPERTYNAME;
 		$server->protectedProperties[] = self::MOUNT_TYPE_PROPERTYNAME;
-		$server->protectedProperties[] = self::IS_ENCRYPTED_PROPERTYNAME;
 		$server->protectedProperties[] = self::SHARE_NOTE;
 
 		// normally these cannot be changed (RFC4918), but we want them modifiable through PROPPATCH
@@ -419,10 +417,6 @@ public function handleGetProperties(PropFind $propFind, \Sabre\DAV\INode $node)
 				return $node->getSize();
 			});
 
-			$propFind->handle(self::IS_ENCRYPTED_PROPERTYNAME, function () use ($node) {
-				return $node->getFileInfo()->isEncrypted() ? '1' : '0';
-			});
-
 			$requestProperties = $propFind->getRequestedProperties();
 
 			if (in_array(self::SUBFILE_COUNT_PROPERTYNAME, $requestProperties, true)