Remove "Debug" example

This example doesn't do much except dump the request structure from
within C++. It does not represent any kind of "Debug" facility in the
library.

Change-Id: Iab71c9136556b3fd335e410908b2d0b31c523bca
Reviewed-on: http://review.couchbase.org/36141
Reviewed-by: Brett Lawson <brett19@gmail.com>
Tested-by: Mark Nunberg <mnunberg@haskalah.org>