[DOCS] Removes LLRC from Java REST book. (#78602)

docs/java-rest/index.asciidoc

@@ -7,8 +7,6 @@ include::../Versions.asciidoc[]
 
 include::overview.asciidoc[]
 
-include::low-level/index.asciidoc[]
-
 include::high-level/index.asciidoc[]
 
 include::redirects.asciidoc[]