Remove redundant docs for Reactive OAuth2 Client

Issue gh-10373

Author: jgrandja

docs/modules/ROOT/nav.adoc

@@ -96,14 +96,12 @@
 *** xref:reactive/oauth2/login.adoc[OAuth2 Log In]
 *** xref:reactive/oauth2/oauth2-client.adoc[OAuth2 Client]
 *** xref:reactive/oauth2/resource-server.adoc[OAuth2 Resource Server]
-*** xref:reactive/registered-oauth2-authorized-client.adoc[@RegisteredOAuth2AuthorizedClient]
 ** xref:reactive/exploits/index.adoc[Protection Against Exploits]
 *** xref:reactive/exploits/csrf.adoc[CSRF]
 *** xref:reactive/exploits/headers.adoc[Headers]
 *** xref:reactive/exploits/http.adoc[HTTP Requests]
 ** Integrations
 *** xref:reactive/integrations/cors.adoc[CORS]
 *** xref:reactive/integrations/rsocket.adoc[RSocket]
-*** xref:reactive/integrations/webclient.adoc[WebClient]
 ** xref:reactive/test.adoc[Testing]
 ** xref:reactive/configuration/webflux.adoc[WebFlux Security]