updated with respect to sort-imports rule (Azure#19047)

Author: bzhang0

sdk/core/core-util/test/browser/isNode.spec.ts

@@ -1,8 +1,8 @@
 // Copyright (c) Microsoft Corporation.
 // Licensed under the MIT license.
 
-import { isNode } from "../../src";
 import { assert } from "chai";
+import { isNode } from "../../src";
 
 describe("isNode (browser)", function() {
   it("should return false", async function() {

sdk/core/core-util/test/delay.spec.ts

@@ -1,9 +1,9 @@
 // Copyright (c) Microsoft Corporation.
 // Licensed under the MIT license.
 
-import { delay } from "../src";
-import { assert } from "chai";
 import * as sinon from "sinon";
+import { assert } from "chai";
+import { delay } from "../src";
 
 describe("delay", function() {
   afterEach(function() {

sdk/core/core-util/test/node/isNode.spec.ts

@@ -1,8 +1,8 @@
 // Copyright (c) Microsoft Corporation.
 // Licensed under the MIT license.
 
-import { isNode } from "../../src";
 import { assert } from "chai";
+import { isNode } from "../../src";
 
 describe("isNode (node)", function() {
   it("should return true", async function() {