Revert 16973:b5427f2d83c3, which breaks automated testing (HVM qemu-dm

will not die when it is told to).
Signed-off-by: Keir Fraser <keir.fraser@citrix.com>

tools/python/xen/xend/image.py

@@ -329,7 +329,7 @@ class ImageHandler:
             return
         if self.pid:
             try:
-                os.kill(self.pid, signal.SIGHUP)
+                os.kill(self.pid, signal.SIGKILL)
             except OSError, exn:
                 log.exception(exn)
             try: