Remove outdated sample containing broken link that no longer exists from README, fixes check-links

Author: wpessers

nodejs/README.md

@@ -84,5 +84,4 @@ You'll find the generated layer zip file at `./packages/layer/build/layer.zip`.
 Sample applications are provided to show usage of the above layer.
 
 - Application using AWS SDK - shows using the wrapper with an application using AWS SDK without code change.
-  - [Using layer built from source](./integration-tests/aws-sdk)
   - [WIP] [Using OTel Public Layer](./sample-apps/aws-sdk)