docs(data-storage): remove mention of encryption with deprecated Redi…

…s backend (#1391)

content/docs/internals/data-storage.md

@@ -33,7 +33,7 @@ To prevent early session loss in production deployments, persistent storage back
 
 The **Databroker Service** stores user session data, and uses an in-memory databroker by default.
 
-Pomerium encrypts record values only for the Redis storage backend (not for the in-memory or Postgres storage backends). When using the Postgres backend we recommend that users configure their own encryption at rest, for example by using full-disk encryption on the volume where Postgres data is stored.
+Pomerium does not encrypt record values for either the in-memory or Postgres storage backends. When using the Postgres backend we recommend that users configure their own encryption at rest, for example by using full-disk encryption on the volume where Postgres data is stored.
 
 :::tip