Remove no-op template blocks
    
    Renaming PHX2 -> IAD2 with existing IAD2 conditional template blocks
    left some in the form...:
    
    {% if datacenter == 'iad2' %}
    ...
    {% elif datacenter == 'iad2' %}
    ...
    
    ...making the second block a no-op. Remove them.
    
    Follow up to commit 7984b46eb79575516fe6d5179a52d4bf11ddc6e6
    
    Signed-off-by: Nils Philippsen <nils@redhat.com>