Remove shebang line from non-scripts

Signed-off-by: Anders Kaseorg <andersk@mit.edu>

api/integrations/asana/zulip_asana_config.py

@@ -1,4 +1,3 @@
-#!/usr/bin/env python
 # -*- coding: utf-8 -*-
 #
 # Copyright © 2014 Zulip, Inc.

api/integrations/basecamp/zulip_basecamp_config.py

@@ -1,4 +1,3 @@
-#!/usr/bin/env python
 # -*- coding: utf-8 -*-
 #
 # Copyright © 2014 Zulip, Inc.

api/integrations/codebase/zulip_codebase_config.py

@@ -1,4 +1,3 @@
-#!/usr/bin/env python
 # -*- coding: utf-8 -*-
 #
 # Copyright © 2014 Zulip, Inc.

api/integrations/git/zulip_git_config.py

@@ -1,4 +1,3 @@
-#!/usr/bin/env python
 # -*- coding: utf-8 -*-
 #
 # Copyright © 2014 Zulip, Inc.

api/integrations/perforce/zulip_perforce_config.py

@@ -1,4 +1,3 @@
-#!/usr/bin/env python
 # -*- coding: utf-8 -*-
 #
 # Copyright © 2014 Zulip, Inc.

api/integrations/svn/zulip_svn_config.py

@@ -1,4 +1,3 @@
-#!/usr/bin/env python
 # -*- coding: utf-8 -*-
 #
 # Copyright © 2014 Zulip, Inc.

scripts/nagios/cron_file_helper.py

@@ -1,4 +1,3 @@
-#!/usr/bin/env python
 import time
 
 # Avoid requiring the typing module to be installed

zerver/lib/bugdown/fenced_code.py

@@ -1,5 +1,3 @@
-#!/usr/bin/env python
-
 """
 Fenced Code Extension for Python Markdown
 =========================================

zerver/lib/ccache.py

@@ -1,7 +1,6 @@
 from __future__ import absolute_import
 from typing import Any, Dict, Optional, Text
 
-#!/usr/bin/env python
 # This file is adapted from samples/shellinabox/ssh-krb-wrapper in
 # https://github.com/davidben/webathena, which has the following
 # license: