[Cypress] Fix a couple of flaky tests.

Await a result, and remove a test that is no longer needed
(as FMS does now show duplicates in Pro areas).

.cypress/cypress/integration/brent.js

@@ -15,6 +15,7 @@ describe('Queen’s Park', function() {
         cy.route('/report/new/ajax*').as('report-ajax');
         cy.route('**/mapserver/brent*queens_park*', 'fixture:brent-queens_park.xml').as('queens_park');
         cy.visit('/report/new?longitude=-0.211045&latitude=51.534948');
+        cy.wait('@report-ajax');
         cy.pickCategory('Dog fouling');
         cy.wait('@queens_park');
         cy.contains('maintained by the City of London').should('be.visible');

.cypress/cypress/integration/duplicates.js

@@ -1,21 +1,4 @@
 describe('Duplicate tests', function() {
-    it('does not try and fetch duplicates which will not get shown', function() {
-      cy.server();
-      cy.route('/report/new/ajax*').as('report-ajax');
-      cy.request({
-        method: 'POST',
-        url: '/auth?r=/',
-        form: true,
-        body: { username: '[email protected]', password_sign_in: 'password' }
-      });
-      cy.visit('http://fixmystreet.localhost:3001/report/1');
-      cy.contains('Report another problem here').click();
-      cy.wait('@report-ajax');
-      cy.pickCategory('Potholes');
-      cy.nextPageReporting();
-      cy.get('div.dropzone').should('be.visible');
-    });
-
     it('has a separate duplicate suggestions step when needed', function() {
       cy.server();
       cy.route('/report/new/ajax*').as('report-ajax');