Clean up Spanner README.md (#5448)

kolea2 · web-flow · commit 556ac4b52c3a · 2019-06-07T11:50:01.000-04:00
diff --git a/google-cloud-clients/google-cloud-spanner/README.md b/google-cloud-clients/google-cloud-spanner/README.md
@@ -9,9 +9,6 @@ Java idiomatic client for [Cloud Spanner][cloud-spanner].
 - [Product Documentation][spanner-product-docs]
 - [Client Library Documentation][spanner-client-lib-docs]
 
-> Note: This client is a work-in-progress, and may occasionally make
-> backwards-incompatible changes.
-
 ## Quickstart
 
 [//]: # ({x-version-update-start:google-cloud-spanner:released})
