Remove new & noteworthy section in favor of our release notes.

The release notes now outline new and noteworthy changes.

Closes #4140

Author: mp911de

src/main/asciidoc/index.adoc

@@ -13,7 +13,6 @@ toc::[]
 
 include::preface.adoc[]
 
-include::new-features.adoc[leveloffset=+1]
 include::upgrading.adoc[leveloffset=+1]
 include::{spring-data-commons-docs}/dependencies.adoc[leveloffset=+1]
 include::{spring-data-commons-docs}/repositories.adoc[leveloffset=+1]