Deorbit IRIX-specific QuickStartGuide bits

Get the rest of them all at once.

Change-Id: Ife9920f00ec8eea953929a76a30f86d958d55f9c
Deorbit HP-UX-specific QuickStartGuide bits

Get the rest of them all at once.

Change-Id: Ife9920f00ec8eea953929a76a30f86d958d55f9c
Deorbit AIX-specific QuickStartGuide bits

Although there are still servers deployed on AIX systems,
there may not be any clients in use, and it is unlikely that
there will be new deployments which require this documentation.

Change-Id: Ife9920f00ec8eea953929a76a30f86d958d55f9c