wic: python2 -> python3

(From OE-Core rev: 9303f92599343adf645fee5d2434fadd97e7febb)

Signed-off-by: Robert Yang <liezhi.yang@windriver.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

scripts/lib/wic/__init__.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python -tt
+#!/usr/bin/env python3
 #
 # Copyright (c) 2007 Red Hat, Inc.
 # Copyright (c) 2011 Intel, Inc.

scripts/lib/wic/ksparser.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python -tt
+#!/usr/bin/env python3
 #
 # Copyright (c) 2016 Intel, Inc.
 #

scripts/lib/wic/pluginbase.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python -tt
+#!/usr/bin/env python3
 #
 # Copyright (c) 2011 Intel, Inc.
 #