Amazon S3 Batch Operations adds support for Delete Object Tagging

You can now perform S3 Delete Object Tagging operations using Amazon S3 Batch Operations to delete object tags across many objects with a single API request or a few clicks in the S3 Management Console. S3 Batch Operations lets you perform repetitive or bulk actions like copying objects or replacing tag sets across billions of objects. S3 Batch Operations handles all the manual work, including managing retries and displaying progress.  

Source:: Amazon AWS