[Enterprise Search] Remove Workplace Search from Top Level Search (#166747)

## Summary

Removes legacy Workplace Search result from the top level search.

![image](5b854468-1d1f-4ddc-8fe9-80dcde8c8ccb)

This is part of the initiative for a longer term place for eventually
deprecating the legacy Workplace Search app.


### Checklist
- [x] [Unit or functional
tests](https://www.elastic.co/guide/en/kibana/master/development-tests.html)
were updated or added to match the most common scenarios

---------

Co-authored-by: kibanamachine <42973632+kibanamachine@users.noreply.github.com>

x-pack/plugins/enterprise_search/server/utils/search_result_provider.test.ts

@@ -8,7 +8,7 @@
 import { NEVER } from 'rxjs';
 import { TestScheduler } from 'rxjs/testing';
 
-import { ENTERPRISE_SEARCH_CONTENT_PLUGIN } from '../../common/constants';
+import { APP_SEARCH_PLUGIN, ENTERPRISE_SEARCH_CONTENT_PLUGIN } from '../../common/constants';
 
 import { getSearchResultProvider } from './search_result_provider';
 
@@ -47,6 +47,18 @@ describe('Enterprise Search search provider', () => {
     },
   };
 
+  const appSearchResult = {
+    icon: 'logoEnterpriseSearch',
+    id: 'app_search',
+    score: 100,
+    title: 'App Search',
+    type: 'Search',
+    url: {
+      path: `${APP_SEARCH_PLUGIN.URL}`,
+      prependBasePath: true,
+    },
+  };
+
   const searchResultProvider = getSearchResultProvider(basePathMock, {
     hasConnectors: true,
     hasWebCrawler: true,
@@ -192,5 +204,41 @@ describe('Enterprise Search search provider', () => {
         });
       });
     });
+    it('returns results for legacy app search', () => {
+      const searchProvider = getSearchResultProvider(basePathMock, {
+        hasConnectors: false,
+        hasWebCrawler: false,
+        canDeployEntSearch: true,
+      } as any);
+      getTestScheduler().run(({ expectObservable }) => {
+        expectObservable(
+          searchProvider.find(
+            { term: 'app search' },
+            { aborted$: NEVER, maxResults: 1, preference: '' },
+            {} as any
+          )
+        ).toBe('(a|)', {
+          a: [appSearchResult],
+        });
+      });
+    });
+    it('does not return results for legacy workplace search', () => {
+      const searchProvider = getSearchResultProvider(basePathMock, {
+        hasConnectors: false,
+        hasWebCrawler: false,
+        canDeployEntSearch: true,
+      } as any);
+      getTestScheduler().run(({ expectObservable }) => {
+        expectObservable(
+          searchProvider.find(
+            { term: 'workplace search' },
+            { aborted$: NEVER, maxResults: 1, preference: '' },
+            {} as any
+          )
+        ).toBe('(a|)', {
+          a: [],
+        });
+      });
+    });
   });
 });

x-pack/plugins/enterprise_search/server/utils/search_result_provider.ts

@@ -18,7 +18,6 @@ import {
   ENTERPRISE_SEARCH_CONNECTOR_CRAWLER_SERVICE_TYPE,
   ENTERPRISE_SEARCH_CONTENT_PLUGIN,
   APP_SEARCH_PLUGIN,
-  WORKPLACE_SEARCH_PLUGIN,
   ESRE_PLUGIN,
 } from '../../common/constants';
 
@@ -106,14 +105,6 @@ export function getSearchResultProvider(
                 serviceType: 'app_search',
                 url: APP_SEARCH_PLUGIN.URL,
               },
-              {
-                keywords: ['workplace', 'search'],
-                name: i18n.translate('xpack.enterpriseSearch.searchProvider.workplaceSearch.name', {
-                  defaultMessage: 'Workplace Search',
-                }),
-                serviceType: 'workplace_search',
-                url: WORKPLACE_SEARCH_PLUGIN.URL,
-              },
               {
                 keywords: ['esre', 'search'],
                 name: i18n.translate('xpack.enterpriseSearch.searchProvider.esre.name', {