mesa: remove shebang from python scripts

Analogous to earlier commit(s).

Signed-off-by: Emil Velikov <emil.velikov@collabora.com>
Reviewed-by: Eric Engestrom <eric.engestrom@imgtec.com>

src/mesa/main/format_info.py

@@ -1,4 +1,3 @@
-#!/usr/bin/env python
 #
 # Copyright 2014 Intel Corporation
 #

src/mesa/main/format_pack.py

@@ -1,4 +1,3 @@
-#!/usr/bin/env python
 
 from mako.template import Template
 from sys import argv

src/mesa/main/format_parser.py

@@ -1,4 +1,3 @@
-#!/usr/bin/env python
 #
 # Copyright 2009 VMware, Inc.
 # Copyright 2014 Intel Corporation

src/mesa/main/format_unpack.py

@@ -1,4 +1,3 @@
-#!/usr/bin/env python
 
 from mako.template import Template
 from sys import argv

src/mesa/main/get_hash_generator.py

@@ -1,4 +1,3 @@
-#!/usr/bin/python2
 # coding=utf-8
 # -*- Mode: Python; py-indent-offset: 4 -*-
 #