diff --git a/src/legacy/core_plugins/kibana/index.js b/src/legacy/core_plugins/kibana/index.js
deleted file mode 100644
index 722d75d00f78fc..00000000000000
--- a/src/legacy/core_plugins/kibana/index.js
+++ /dev/null
@@ -1,39 +0,0 @@
-/*
- * Licensed to Elasticsearch B.V. under one or more contributor
- * license agreements. See the NOTICE file distributed with
- * this work for additional information regarding copyright
- * ownership. Elasticsearch B.V. licenses this file to you under
- * the Apache License, Version 2.0 (the "License"); you may
- * not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *    http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing,
- * software distributed under the License is distributed on an
- * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
- * KIND, either express or implied.  See the License for the
- * specific language governing permissions and limitations
- * under the License.
- */
-
-import { getUiSettingDefaults } from './server/ui_setting_defaults';
-
-export default function (kibana) {
-  return new kibana.Plugin({
-    id: 'kibana',
-    config: function (Joi) {
-      return Joi.object({
-        enabled: Joi.boolean().default(true),
-        index: Joi.string().default('.kibana'),
-        autocompleteTerminateAfter: Joi.number().integer().min(1).default(100000),
-        // TODO Also allow units here like in elasticsearch config once this is moved to the new platform
-        autocompleteTimeout: Joi.number().integer().min(1).default(1000),
-      }).default();
-    },
-
-    uiExports: {
-      uiSettingDefaults: getUiSettingDefaults(),
-    },
-  });
-}
diff --git a/src/legacy/core_plugins/kibana/package.json b/src/legacy/core_plugins/kibana/package.json
deleted file mode 100644
index 94db646611df0b..00000000000000
--- a/src/legacy/core_plugins/kibana/package.json
+++ /dev/null
@@ -1,9 +0,0 @@
-{
-  "name": "kibana",
-  "version": "kibana",
-  "config": {
-    "@elastic/eslint-import-resolver-kibana": {
-      "projectRoot": false
-    }
-  }
-}
diff --git a/src/legacy/core_plugins/kibana/public/index.scss b/src/legacy/core_plugins/kibana/public/index.scss
deleted file mode 100644
index 7de0c8fc15f943..00000000000000
--- a/src/legacy/core_plugins/kibana/public/index.scss
+++ /dev/null
@@ -1,7 +0,0 @@
-// Elastic charts
-@import '@elastic/charts/dist/theme';
-@import '@elastic/eui/src/themes/charts/theme';
-
-// Public UI styles
-@import 'src/legacy/ui/public/index';
-
diff --git a/src/legacy/core_plugins/kibana/server/ui_setting_defaults.js b/src/legacy/core_plugins/kibana/server/ui_setting_defaults.js
deleted file mode 100644
index 7de5fb581643ac..00000000000000
--- a/src/legacy/core_plugins/kibana/server/ui_setting_defaults.js
+++ /dev/null
@@ -1,23 +0,0 @@
-/*
- * Licensed to Elasticsearch B.V. under one or more contributor
- * license agreements. See the NOTICE file distributed with
- * this work for additional information regarding copyright
- * ownership. Elasticsearch B.V. licenses this file to you under
- * the Apache License, Version 2.0 (the "License"); you may
- * not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *    http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing,
- * software distributed under the License is distributed on an
- * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
- * KIND, either express or implied.  See the License for the
- * specific language governing permissions and limitations
- * under the License.
- */
-
-export function getUiSettingDefaults() {
-  // wrapped in provider so that a new instance is given to each app/test
-  return {};
-}
diff --git a/src/legacy/server/config/schema.js b/src/legacy/server/config/schema.js
index 6cd3f8dc448b09..dd65e45659ffce 100644
--- a/src/legacy/server/config/schema.js
+++ b/src/legacy/server/config/schema.js
@@ -231,6 +231,15 @@ export default () =>
       locale: Joi.string().default('en'),
     }).default(),
 
+    // temporarily moved here from the (now deleted) kibana legacy plugin
+    kibana: Joi.object({
+      enabled: Joi.boolean().default(true),
+      index: Joi.string().default('.kibana'),
+      autocompleteTerminateAfter: Joi.number().integer().min(1).default(100000),
+      // TODO Also allow units here like in elasticsearch config once this is moved to the new platform
+      autocompleteTimeout: Joi.number().integer().min(1).default(1000),
+    }).default(),
+
     savedObjects: Joi.object({
       maxImportPayloadBytes: Joi.number().default(10485760),
       maxImportExportSize: Joi.number().default(10000),
diff --git a/src/legacy/server/saved_objects/saved_objects_mixin.js b/src/legacy/server/saved_objects/saved_objects_mixin.js
index 185c8807ae8b5f..96cf2058839cfb 100644
--- a/src/legacy/server/saved_objects/saved_objects_mixin.js
+++ b/src/legacy/server/saved_objects/saved_objects_mixin.js
@@ -39,14 +39,6 @@ export function savedObjectsMixin(kbnServer, server) {
 
   server.decorate('server', 'kibanaMigrator', migrator);
 
-  const warn = (message) => server.log(['warning', 'saved-objects'], message);
-  // we use kibana.index which is technically defined in the kibana plugin, so if
-  // we don't have the plugin (mainly tests) we can't initialize the saved objects
-  if (!kbnServer.pluginSpecs.some((p) => p.getId() === 'kibana')) {
-    warn('Saved Objects uninitialized because the Kibana plugin is disabled.');
-    return;
-  }
-
   const serializer = kbnServer.newPlatform.start.core.savedObjects.createSerializer();
 
   const createRepository = (callCluster, includedHiddenTypes = []) => {
diff --git a/src/legacy/server/saved_objects/saved_objects_mixin.test.js b/src/legacy/server/saved_objects/saved_objects_mixin.test.js
index 63e4a632ab5e01..d1d6c052ad5891 100644
--- a/src/legacy/server/saved_objects/saved_objects_mixin.test.js
+++ b/src/legacy/server/saved_objects/saved_objects_mixin.test.js
@@ -161,21 +161,6 @@ describe('Saved Objects Mixin', () => {
     };
   });
 
-  describe('no kibana plugin', () => {
-    it('should not try to create anything', () => {
-      mockKbnServer.pluginSpecs.some = () => false;
-      savedObjectsMixin(mockKbnServer, mockServer);
-      expect(mockServer.log).toHaveBeenCalledWith(expect.any(Array), expect.any(String));
-      expect(mockServer.decorate).toHaveBeenCalledWith(
-        'server',
-        'kibanaMigrator',
-        expect.any(Object)
-      );
-      expect(mockServer.decorate).toHaveBeenCalledTimes(1);
-      expect(mockServer.route).not.toHaveBeenCalled();
-    });
-  });
-
   describe('Saved object service', () => {
     let service;
 
diff --git a/x-pack/legacy/plugins/security/index.ts b/x-pack/legacy/plugins/security/index.ts
index 3ab5126e52c5f0..c3596d3745e57e 100644
--- a/x-pack/legacy/plugins/security/index.ts
+++ b/x-pack/legacy/plugins/security/index.ts
@@ -11,7 +11,7 @@ export const security = (kibana: Record<string, any>) =>
   new kibana.Plugin({
     id: 'security',
     publicDir: resolve(__dirname, 'public'),
-    require: ['kibana'],
+    require: ['elasticsearch'],
     configPrefix: 'xpack.security',
     config: (Joi: Root) =>
       Joi.object({ enabled: Joi.boolean().default(true) })
diff --git a/x-pack/legacy/plugins/spaces/index.ts b/x-pack/legacy/plugins/spaces/index.ts
index 40339f198df6d1..725d022879e0d7 100644
--- a/x-pack/legacy/plugins/spaces/index.ts
+++ b/x-pack/legacy/plugins/spaces/index.ts
@@ -16,7 +16,7 @@ export const spaces = (kibana: Record<string, any>) =>
     id: 'spaces',
     configPrefix: 'xpack.spaces',
     publicDir: resolve(__dirname, 'public'),
-    require: ['kibana', 'elasticsearch', 'xpack_main'],
+    require: ['elasticsearch', 'xpack_main'],
     config(Joi: any) {
       return Joi.object({
         enabled: Joi.boolean().default(true),