Drop integration tiles for connectors in Enterprise Search (#196173)

## Closes elastic/search-team#8406

## Summary

For 9.x we're removing connectors the way they are and switching to
agent integrations - we already started work there.

This PR removes the integrations from 9.X branch.


### Checklist

Delete any items that are not applicable to this PR.

- [ ] Any text added follows [EUI's writing
guidelines](https://elastic.github.io/eui/#/guidelines/writing), uses
sentence case text and includes [i18n
support](https://github.com/elastic/kibana/blob/main/packages/kbn-i18n/README.md)
- [ ]
[Documentation](https://www.elastic.co/guide/en/kibana/master/development-documentation.html)
was added for features that require explanation or tutorials
- [ ] [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
- [ ] [Flaky Test
Runner](https://ci-stats.kibana.dev/trigger_flaky_test_runner/1) was
used on any tests changed
- [ ] Any UI touched in this PR is usable by keyboard only (learn more
about [keyboard accessibility](https://webaim.org/techniques/keyboard/))
- [ ] Any UI touched in this PR does not create any new axe failures
(run axe in browser:
[FF](https://addons.mozilla.org/en-US/firefox/addon/axe-devtools/),
[Chrome](https://chrome.google.com/webstore/detail/axe-web-accessibility-tes/lhdoppojpmngadmnindnejefpokejbdd?hl=en-US))
- [ ] If a plugin configuration key changed, check if it needs to be
allowlisted in the cloud and added to the [docker
list](https://github.com/elastic/kibana/blob/main/src/dev/build/tasks/os_packages/docker_generator/resources/base/bin/kibana-docker)
- [ ] This renders correctly on smaller devices using a responsive
layout. (You can test this [in your
browser](https://www.browserstack.com/guide/responsive-testing-on-local-server))
- [ ] This was checked for [cross-browser
compatibility](https://www.elastic.co/support/matrix#matrix_browsers)



### For maintainers

- [ ] This was checked for breaking API changes and was [labeled
appropriately](https://www.elastic.co/guide/en/kibana/master/contributing.html#_add_your_labels)
- [ ] This will appear in the **Release Notes** and follow the
[guidelines](https://www.elastic.co/guide/en/kibana/master/contributing.html#kibana-release-notes-process)

test/api_integration/apis/custom_integration/integrations.ts

@@ -25,7 +25,7 @@ export default function ({ getService }: FtrProviderContext) {
 
         expect(resp.body).to.be.an('array');
 
-        expect(resp.body.length).to.be(55);
+        expect(resp.body.length).to.be(21);
 
         // Test for sample data card
         expect(resp.body.findIndex((c: { id: string }) => c.id === 'sample_data_all')).to.be.above(

x-pack/plugins/enterprise_search/server/integrations.ts

@@ -6,17 +6,13 @@
  */
 import type { CustomIntegrationsPluginSetup } from '@kbn/custom-integrations-plugin/server';
 import { i18n } from '@kbn/i18n';
-import { ConnectorServerSideDefinition } from '@kbn/search-connectors-plugin/server';
 
 import { ConfigType } from '.';
 
 export const registerEnterpriseSearchIntegrations = (
   config: ConfigType,
-  customIntegrations: CustomIntegrationsPluginSetup,
-  isCloud: boolean,
-  connectors: ConnectorServerSideDefinition[]
+  customIntegrations: CustomIntegrationsPluginSetup
 ) => {
-  const nativeSearchTag = config.hasNativeConnectors && isCloud ? ['native_search'] : [];
   if (config.hasWebCrawler) {
     customIntegrations.registerCustomIntegration({
       id: 'web_crawler',
@@ -58,29 +54,4 @@ export const registerEnterpriseSearchIntegrations = (
     shipper: 'search',
     isBeta: false,
   });
-
-  if (config.hasConnectors) {
-    connectors.forEach((connector) => {
-      const connectorType = connector.isNative && isCloud ? 'native' : 'connector_client';
-      const categories = connector.isNative
-        ? [...(connector.categories || []), ...nativeSearchTag]
-        : connector.categories;
-
-      customIntegrations.registerCustomIntegration({
-        categories: categories || [],
-        description: connector.description || '',
-        icons: [
-          {
-            src: connector.iconPath,
-            type: 'svg',
-          },
-        ],
-        id: `${connector.serviceType}-${connector.name}`,
-        isBeta: connector.isBeta,
-        shipper: 'search',
-        title: connector.name,
-        uiInternalPath: `/app/enterprise_search/content/connectors/new_connector?connector_type=${connectorType}&service_type=${connector.serviceType}`,
-      });
-    });
-  }
 };

x-pack/plugins/enterprise_search/server/plugin.ts

@@ -182,12 +182,7 @@ export class EnterpriseSearchPlugin implements Plugin {
     const isCloud = !!cloud?.cloudId;
 
     if (customIntegrations) {
-      registerEnterpriseSearchIntegrations(
-        config,
-        customIntegrations,
-        isCloud,
-        searchConnectors?.getConnectorTypes() || []
-      );
+      registerEnterpriseSearchIntegrations(config, customIntegrations);
     }
 
     /*