docs: remove incorrect info on enc ctx being required, thus allowing …

…random data

docs/utilities/data_masking.md

@@ -152,9 +152,6 @@ Under the hood, we delegate a [number of operations](#encrypt-operation-with-enc
 
 For a stronger security posture, you can add metadata to each encryption operation. This is known as encryption context. These are non-sensitive data that can help protect authenticity and integrity of your encrypted data.
 
-!!! note "Encryption context will be required in [decryption operation](#decrypting-data)."
-    Make sure this metadata is standard and not random unless it's also available during decrypt operations.
-
 !!! todo "Change encrypt/decrypt signature to allow fluid encryption context"
     [We need an API change](https://github.com/aws-powertools/powertools-lambda-python/pull/3186#issuecomment-1860778334).