removed react-testing-library import statement - that was causing an error

Author: davefranz

src/containers/LeftPanel/__tests__/hooksLeftPanel.test.js

@@ -6,7 +6,6 @@ import { GlobalContext } from '../../../context/globalReducer';
 import { TestFileModalContext } from '../../../context/testFileModalReducer';
 import { HooksTestCaseContext } from '../../../context/hooksTestCaseReducer';
 
-import '@testing-library/jest-dom/extend-expect';
 import { mount } from 'enzyme';
 import { configure } from 'enzyme';
 import Adapter from 'enzyme-adapter-react-16';

src/containers/LeftPanel/__tests__/testFileModal.test.js

@@ -8,7 +8,6 @@ import { ReduxTestCaseContext } from '../../../context/reduxTestCaseReducer';
 import { TestCaseContext } from '../../../context/testCaseReducer';
 import { EndpointTestCaseContext } from '../../../context/endpointTestCaseReducer';
 
-import '@testing-library/jest-dom/extend-expect';
 import { mount } from 'enzyme';
 import { configure } from 'enzyme';
 import Adapter from 'enzyme-adapter-react-16';