Drop synthetic beans

Author: holly-cummins

docs/src/main/asciidoc/extension-maturity-matrix.adoc

@@ -143,11 +143,6 @@ Quarkus's reactive core is a key contributor to its excellent throughput and sca
 For maximum scalability, go beyond the reactive core and enable fully reactive programming, using Mutiny. Most projects that support a reactive programming model offer two distinct extensions, a `-reactive` and a plain one.
 See, for example, https://quarkus.io/extensions/io.quarkiverse.quarkus-elasticsearch/quarkus-elasticsearch/[ElasticSearch] and https://quarkus.io/extensions/io.quarkiverse.quarkus-elasticsearch-reactive/quarkus-elasticsearch-reactive/[ElasticSearch Reactive] extensions.
 
-=== Replace CDI Beans With Synthetic Ones
-
-Quarkus allows extensions to create xref:cdi-integration#synthetic_beans[synthetic beans].
- These reduce the number of CDI beans at runtime, which improves memory footprint.
-
 == Operations
 
 Developer joy is important, but so are observability, maintainability, and other operational considerations.