[XEND] Re-add vtpm device support in XendConfig

This patch re-adds a recently removed vTPM device handling code.
I am also removing that one code part in the test script that does not
work.

Signed-off-by: Stefan Berger <stefanb@us.ibm.com>

tools/python/scripts/xapi.py

@@ -446,8 +446,6 @@ def xapi_vtpm_create(*args):
     print "Has driver type '%s'" % driver
     vtpm_rec = execute(server.VTPM.get_record, session, vtpm_uuid)
     print "Has vtpm record '%s'" % vtpm_rec
-    vm = execute(server.VTPM.get_VM, session, vtpm_uuid)
-    print "Has VM '%s'" % vm
 
 
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