stop importing sentry webpack plugin type separately

Author: lobsterkatie

packages/nextjs/test/config.test.ts

@@ -9,7 +9,6 @@ import {
   EntryPropertyFunction,
   ExportedNextConfig,
   NextConfigObject,
-  SentryWebpackPlugin as SentryWebpackPluginType,
   SentryWebpackPluginOptions,
   WebpackConfigObject,
 } from '../src/config/types';