chore: remove redundant generate auth url mutation

packages/backend/src/graphql/mutations/generate-auth-url.js

@@ -1,30 +0,0 @@
-import globalVariable from '../../helpers/global-variable.js';
-import App from '../../models/app.js';
-
-const generateAuthUrl = async (_parent, params, context) => {
-  context.currentUser.can('create', 'Connection');
-
-  const connection = await context.currentUser
-    .$relatedQuery('connections')
-    .findOne({
-      id: params.input.id,
-    })
-    .throwIfNotFound();
-
-  if (!connection.formattedData) {
-    return null;
-  }
-
-  const authInstance = (
-    await import(`../../apps/${connection.key}/auth/index.js`)
-  ).default;
-
-  const app = await App.findOneByKey(connection.key);
-
-  const $ = await globalVariable({ connection, app });
-  await authInstance.generateAuthUrl($);
-
-  return connection.formattedData;
-};
-
-export default generateAuthUrl;