core: Move core.deleteUser() to C.

core/core.js

@@ -391,23 +391,6 @@ exports.getProcessBlob = async function getProcessBlob(blobId, key, options) {
 					throw new Error('Must be signed-in to create an account.');
 				}
 			};
-			if (process.credentials?.permissions?.administration) {
-				imports.core.deleteUser = async function (user) {
-					await imports.core.permissionTest('delete_user');
-					let db = new Database('auth');
-					db.remove('user:' + user);
-					let users = new Set();
-					let users_original = await db.get('users');
-					try {
-						users = new Set(JSON.parse(users_original));
-					} catch {}
-					users.delete(user);
-					users = JSON.stringify([...users].sort());
-					if (users !== users_original) {
-						await db.set('users', users);
-					}
-				};
-			}
 			if (options.api) {
 				imports.app = {};
 				for (let i in options.api) {