Fix migration guide

Author: andreiborza

docs/migration/v8-to-v9.md

@@ -108,18 +108,6 @@ It will be removed in a future major version.
 
 ### `@sentry/nestjs`
 
-- Removed `SentryService`.
-  If you are using `@sentry/nestjs` you can safely remove any references to the `SentryService`.
-  If you are using another package migrate to `@sentry/nestjs` and remove the `SentryService` afterwards.
-
-### `@sentry/nestjs`
-
-- Removed `SentryService`.
-  If you are using `@sentry/nestjs` you can safely remove any references to the `SentryService`.
-  If you are using another package migrate to `@sentry/nestjs` and remove the `SentryService` afterwards.
-
-### `@sentry/nestjs`
-
 - Removed `SentryService`.
   If you are using `@sentry/nestjs` you can safely remove any references to the `SentryService`.
   If you are using another package migrate to `@sentry/nestjs` and remove the `SentryService` afterwards.