Drop obsolete boto-1.9 patch

This has been unreferenced since commit
d52d71a04bd99794401178acaf164fec94b8e387 from August 2014.

pkgs/development/python-modules/boto-1.9-python-2.7.patch

@@ -1,19 +0,0 @@
-Fix Boto 1.9 on Python 2.7.
-
-https://github.com/boto/boto/commit/6760075073c34d6dddb7e13b80dfa8d09f0f4f79
-
-diff --git a/boto/connection.py b/boto/connection.py
-index c5779e2..71942f1 100644
---- a/boto/connection.py
-+++ b/boto/connection.py
-@@ -252,8 +252,9 @@ class AWSAuthConnection(object):
-             # versions, it would append ":443" to the hostname sent
-             # in the Host header and so we needed to make sure we
-             # did the same when calculating the V2 signature.  In 2.6
-+            # (and higher!)
-             # it no longer does that.  Hence, this kludge.
--            if sys.version[:3] == "2.6" and port == 443:
-+            if sys.version[:3] in ('2.6', '2.7') and port == 443:
-                 signature_host = self.host
-             else:
-                 signature_host = '%s:%d' % (self.host, port)