[xml] how to remove/delete a child node?

[Kristine Rudkin <rudkin yahoo com>]

I'm trying to do something elementary like remove a
child node from a doc (I'm a newbie to libxml2, so
apologies if this is extremely basic.) I've hunted
through the site archives, examples and documents,
and can't seem to find the information I'm looking
for. Is there a xml or xpath function that can 
used (or a set type of procedure) to remove a child 
node? I'm basically trying to transform this doc:
<root-node>
   <child-node>child 1</child-node>
   <child-node>child 2</child-node>
</root-node>

to:
<root-node>
   <child-node>child 2</child-node>
</root-node>

thanks,
rudkin

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