hotplug/Linux: Remove tracing (bash -x) from network-nat script

Signed-off-by: Olaf Hering <olaf@aepfle.de>
Acked-by: Ian Campbell <ian.campbell@citrix.com>
Committed-by: Ian Campbell <ian.campbell@citrix.com>

tools/hotplug/Linux/network-nat

@@ -1,4 +1,4 @@
-#!/bin/bash -x
+#!/bin/bash
 #============================================================================
 # Default Xen network start/stop script when using NAT.
 # Xend calls a network script when it starts.