remove unneeded and broken plugin (#34087)

fixes #25484
fixes #34064

## Bug

- [x] Related issues linked using `fixes #number`
- [ ] Integration tests added
- [ ] Errors have helpful link attached, see `contributing.md`

packages/next/build/webpack-config.ts

@@ -38,7 +38,6 @@ import BuildManifestPlugin from './webpack/plugins/build-manifest-plugin'
 import { JsConfigPathsPlugin } from './webpack/plugins/jsconfig-paths-plugin'
 import { DropClientPage } from './webpack/plugins/next-drop-client-page-plugin'
 import { TraceEntryPointsPlugin } from './webpack/plugins/next-trace-entrypoints-plugin'
-import NextJsSsrImportPlugin from './webpack/plugins/nextjs-ssr-import'
 import PagesManifestPlugin from './webpack/plugins/pages-manifest-plugin'
 import { ProfilingPlugin } from './webpack/plugins/profiling-plugin'
 import { ReactLoadablePlugin } from './webpack/plugins/react-loadable-plugin'
@@ -1475,7 +1474,6 @@ export default async function getBaseWebpackConfig(
           isEdgeRuntime,
           pageExtensions: config.pageExtensions,
         }),
-      isServer && new NextJsSsrImportPlugin(),
       !isServer &&
         new BuildManifestPlugin({
           buildId,