core: parentApp hasn't been a thing in a long while.

core/app.js

@@ -111,7 +111,6 @@ exports.app_socket = async function socket(request, response) {
 				let packageName;
 				let blobId;
 				let match;
-				let parentApp;
 				if (
 					(match = /^\/([&%][^\.]{44}(?:\.\w+)?)(\/?.*)/.exec(message.path))
 				) {
@@ -132,13 +131,6 @@ exports.app_socket = async function socket(request, response) {
 						);
 						return;
 					}
-					if (packageOwner != 'core') {
-						let coreId = await new Database('core').get('path:' + packageName);
-						parentApp = {
-							path: '/~core/' + packageName + '/',
-							id: coreId,
-						};
-					}
 				}
 				response.send(
 					JSON.stringify(
@@ -146,7 +138,6 @@ exports.app_socket = async function socket(request, response) {
 							{
 								action: 'session',
 								credentials: credentials,
-								parentApp: parentApp,
 								id: blobId,
 							},
 							await ssb_internal.getIdentityInfo(