examples: Remove from __future__ imports.

zulip/zulip/examples/create-user

@@ -1,7 +1,6 @@
 #!/usr/bin/env python3
 # -*- coding: utf-8 -*-
 
-from __future__ import print_function
 import argparse
 
 usage = """create-user --new-email=<email address> --new-password=<password> --new-full-name=<full name> --new-short-name=<short name> [options]

zulip/zulip/examples/edit-message

@@ -1,7 +1,6 @@
 #!/usr/bin/env python3
 # -*- coding: utf-8 -*-
 
-from __future__ import print_function
 import argparse
 
 usage = """edit-message [options] --message-id=<msg_id> --subject=<new subject> --content=<new content>

zulip/zulip/examples/get-public-streams

@@ -1,7 +1,6 @@
 #!/usr/bin/env python3
 # -*- coding: utf-8 -*-
 
-from __future__ import print_function
 import argparse
 
 usage = """get-public-streams [options]

zulip/zulip/examples/get-user-presence

@@ -1,7 +1,6 @@
 #!/usr/bin/env python3
 # -*- coding: utf-8 -*-
 
-from __future__ import print_function
 import argparse
 
 usage = """get-user-presence --email=<email address> [options]

zulip/zulip/examples/list-members

@@ -1,7 +1,6 @@
 #!/usr/bin/env python3
 # -*- coding: utf-8 -*-
 
-from __future__ import print_function
 import argparse
 
 usage = """list-members [options]

zulip/zulip/examples/list-subscriptions

@@ -1,7 +1,6 @@
 #!/usr/bin/env python3
 # -*- coding: utf-8 -*-
 
-from __future__ import print_function
 import argparse
 
 usage = """list-subscriptions [options]

zulip/zulip/examples/print-events

@@ -1,7 +1,6 @@
 #!/usr/bin/env python3
 # -*- coding: utf-8 -*-
 
-from __future__ import print_function
 import argparse
 
 from typing import Any, Dict

zulip/zulip/examples/print-messages

@@ -1,7 +1,6 @@
 #!/usr/bin/env python3
 # -*- coding: utf-8 -*-
 
-from __future__ import print_function
 import argparse
 
 from typing import Any, Dict

zulip/zulip/examples/send-message

@@ -1,7 +1,6 @@
 #!/usr/bin/env python3
 # -*- coding: utf-8 -*-
 
-from __future__ import print_function
 import argparse
 
 import zulip

zulip/zulip/examples/subscribe

@@ -1,7 +1,6 @@
 #!/usr/bin/env python3
 # -*- coding: utf-8 -*-
 
-from __future__ import print_function
 import sys
 import argparse
 

zulip/zulip/examples/unsubscribe

@@ -1,7 +1,6 @@
 #!/usr/bin/env python3
 # -*- coding: utf-8 -*-
 
-from __future__ import print_function
 import sys
 import argparse
 

zulip/zulip/examples/upload-file

@@ -1,7 +1,6 @@
 #!/usr/bin/env python3
 # -*- coding: utf-8 -*-
 
-from __future__ import print_function
 import argparse
 
 from six.moves import StringIO as _StringIO