Cleanup GraphQL Playground usages/references (#7586)

.changeset/tender-goats-yell.md

@@ -0,0 +1,2 @@
+---
+---

docs/source/migration.mdx

@@ -321,7 +321,6 @@ This plugin installs the [unmaintained](https://github.com/graphql/graphql-playg
 | `ApolloServerPluginInlineTrace` | `@apollo/server/plugin/inlineTrace` |
 | `ApolloServerPluginInlineTraceDisabled` | `@apollo/server/plugin/disabled` |
 | `ApolloServerPluginLandingPageDisabled` | `@apollo/server/plugin/disabled` |
-| `ApolloServerPluginLandingPageGraphQLPlayground` | `@apollo/server-plugin-landing-page-graphql-playground` |
 | `ApolloServerPluginLandingPageLocalDefault` | `@apollo/server/plugin/landingPage/default` |
 | `ApolloServerPluginLandingPageProductionDefault` | `@apollo/server/plugin/landingPage/default` |
 | `ApolloServerPluginSchemaReporting` | `@apollo/server/plugin/schemaReporting` |

package.json

@@ -40,7 +40,6 @@
   "devDependencies": {
     "@apollo/client": "3.7.14",
     "@apollo/gateway": "2.4.6",
-    "@apollo/server-plugin-landing-page-graphql-playground": "4.0.0",
     "@apollo/subgraph": "2.4.6",
     "@apollo/utils.createhash": "2.0.1",
     "@changesets/changelog-github": "0.4.8",

packages/integration-testsuite/package.json

@@ -29,7 +29,6 @@
     "@apollo/cache-control-types": "^1.0.2",
     "@apollo/client": "^3.6.9",
     "@apollo/server": "4.7.1",
-    "@apollo/server-plugin-landing-page-graphql-playground": "^4.0.0",
     "@apollo/utils.keyvaluecache": "^2.1.0",
     "@apollo/utils.createhash": "^2.0.0",
     "@apollo/usage-reporting-protobuf": "^4.1.0",

packages/integration-testsuite/src/apolloServerTests.ts

@@ -58,7 +58,6 @@ import {
   ApolloServerPluginUsageReportingDisabled,
 } from '@apollo/server/plugin/disabled';
 import { ApolloServerPluginLandingPageLocalDefault } from '@apollo/server/plugin/landingPage/default';
-import { ApolloServerPluginLandingPageGraphQLPlayground } from '@apollo/server-plugin-landing-page-graphql-playground';
 import {
   jest,
   describe,
@@ -2932,25 +2931,6 @@ export function defineIntegrationTestSuiteApolloServerTests(
         );
       });
 
-      // We don’t maintain this plugin any more (and we deleted its source from
-      // this repository) but it would still be nice to find out if we broke the
-      // plugin somehow.
-      it('can install playground with specific version', async () => {
-        url = (
-          await createServer({
-            typeDefs: 'type Query {x: ID}',
-            plugins: [
-              ApolloServerPluginLandingPageGraphQLPlayground({
-                version: '9.8.7',
-              }),
-            ],
-          })
-        ).url;
-        await get()
-          .expect(/Playground/)
-          .expect(/react@9\.8\.7/);
-      });
-
       it('can be disabled', async () => {
         url = (
           await createServer({