Remove orphan ifdef

Author: aireilly

welcome/index.adoc

@@ -23,8 +23,6 @@ ifdef::openshift-rosa[]
 To navigate the ROSA documentation, use the left navigation bar.
 endif::[]
 
-ifndef::openshift-rosa[]
-
 ifndef::openshift-rosa,openshift-dedicated,openshift-dpu,openshift-telco[]
 To navigate the {product-title} {product-version} documentation, you can use one of the following methods:
 
@@ -52,4 +50,4 @@ endif::[]
 
 ifdef::openshift-dedicated[]
 To navigate the {product-title} documentation, use the navigation bar.
-endif::[]
+endif::[]