Pruned node modules

tweaking workflow

node_modules/jest-util/build/isPromise.js

@@ -1,19 +0,0 @@
-'use strict';
-
-Object.defineProperty(exports, '__esModule', {
-  value: true
-});
-exports.default = void 0;
-
-/**
- * Copyright (c) Facebook, Inc. and its affiliates. All Rights Reserved.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-const Promise = global.Promise; // see ES2015 spec 25.4.4.5, https://stackoverflow.com/a/38339199
-
-const isPromise = candidate => Promise.resolve(candidate) === candidate;
-
-var _default = isPromise;
-exports.default = _default;