add some eslint rules for testing-library use in tests

Signed-off-by: Fredrik Adelöw <freben@gmail.com>

plugins/lighthouse/src/components/AuditList/AuditListForEntity.test.tsx

@@ -122,7 +122,7 @@ describe('<AuditListTableForEntity />', () => {
 
     it('renders nothing', async () => {
       const { queryByTestId } = subject();
-      expect(await queryByTestId('AuditListTable')).toBeNull();
+      expect(queryByTestId('AuditListTable')).toBeNull();
     });
   });
 
@@ -137,7 +137,7 @@ describe('<AuditListTableForEntity />', () => {
 
     it('renders nothing', async () => {
       const { queryByTestId } = subject();
-      expect(await queryByTestId('AuditListTable')).toBeNull();
+      expect(queryByTestId('AuditListTable')).toBeNull();
     });
   });
 });

plugins/lighthouse/src/components/Cards/LastLighthouseAuditCard.test.tsx

@@ -151,10 +151,10 @@ describe('<LastLighthouseAuditCard />', () => {
 
     it('renders nothing', async () => {
       const { queryByTestId } = subject();
-      expect(await queryByTestId('AuditListTable')).toBeNull();
+      expect(queryByTestId('AuditListTable')).toBeNull();
     });
   });
-  //
+
   describe('where there is no data', () => {
     beforeEach(() => {
       (useWebsiteForEntity as jest.Mock).mockReturnValue({
@@ -166,7 +166,7 @@ describe('<LastLighthouseAuditCard />', () => {
 
     it('renders nothing', async () => {
       const { queryByTestId } = subject();
-      expect(await queryByTestId('AuditListTable')).toBeNull();
+      expect(queryByTestId('AuditListTable')).toBeNull();
     });
   });
 });