The useful content in the user guide is all being moved to
project-specific docsets. We can remove the guide here, and replace it
with a /user/ landing page that provides links to all of the known user
guides for services and clients.
Change-Id: I7005b4288b94e755f406fd6a8e3273265b643042
Signed-off-by: Doug Hellmann <doug@doughellmann.com>
1fd07e6e31