Removed copyright headers from examples

This makes the documentation less cluttered (these examples are
included in the docs).

Author: mjs

examples/example.py

@@ -1,7 +1,3 @@
-# Copyright (c) 2014, Menno Smits
-# Released subject to the New BSD License
-# Please see http://en.wikipedia.org/wiki/BSD_licenses
-
 from imapclient import IMAPClient
 
 HOST = 'imap.host.com'

examples/idle_example.py

@@ -1,4 +1,5 @@
-# Open a connection in IDLE mode and wait for notifications from the server
+# Open a connection in IDLE mode and wait for notifications from the
+# server.
 
 from imapclient import IMAPClient
 

examples/tls_cacert.py

@@ -1,9 +1,5 @@
-# Copyright (c) 2015, Menno Smits
-# Released subject to the New BSD License
-# Please see http://en.wikipedia.org/wiki/BSD_licenses
-#
 # Establish a secure connection to a server that does not have a certificate
-# signed by a trusted authority.
+# signed by a trusted certificate authority (CA).
 
 import ssl
 

examples/tls_no_checks.py

@@ -1,7 +1,3 @@
-# Copyright (c) 2015, Menno Smits
-# Released subject to the New BSD License
-# Please see http://en.wikipedia.org/wiki/BSD_licenses
-#
 # Establish an encrypted connection to a server without checking its
 # certificate. This setup is insecure, DO NOT USE to connect to servers
 # over the Internet.