refactor(*): cleanup unnecessary code

src/setupTests.js

@@ -10,6 +10,17 @@
 import { configure } from "enzyme";
 import Adapter from "enzyme-adapter-react-16";
 
+/**
+ * Gives access to the following jest custom matchers:
+ * - toBeInTheDOM
+ * - toHaveTextContent
+ * - toHaveAttribute
+ * - toHaveClass
+ *
+ * Can also be exposed from "dom-testing-library" via `import "dom-testing-library/extend-expect"`
+ */
+import "jest-dom/extend-expect";
+
 configure({ adapter: new Adapter() });
 
 global.window.resizeTo = (width, height) => {

src/testUtils.js

@@ -3,16 +3,6 @@
 import React from "react";
 import { MemoryRouter } from "react-router-dom";
 import { render } from "react-testing-library";
-// add the custom expect matchers
-import "dom-testing-library/extend-expect";
-/**
- * Gives access to following jest custom matcher:
- * - toBeInTheDOM
- * - toHaveTextContent
- * - toHaveAttribute
- * - toHaveClass
- */
-import "jest-dom/extend-expect";
 
 const renderWithRouter = (ui, renderOptions = {}) =>
   render(<MemoryRouter>{ui}</MemoryRouter>, renderOptions);