To suppress namespace declarations, your stylesheet needs to (a) not copy
any namespace nodes to the output document, and (b) not generate any
namespaced elements or attributes (since serializers will generally create
the appropriate declarations automatically.)
The latter may mean you can't use normal copy-element-to-output processing
at all, but instead must use xsl:element to explicitly create new elements
with the appropriate (non-prefixed!) names.
Note that this is generally Very Much The Wrong Thing To Do. You may want
to think again about whether suppressing the use of namespaces in your
output document is really a good idea.
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Joe Kesselman / IBM Research
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