dev-python/pyzmq: remove unused patch

Closes: https://github.com/gentoo/gentoo/pull/5352

dev-python/pyzmq/files/pyzmq-cython-0.24.patch

@@ -1,33 +0,0 @@
-From 659f9211aad1565543e26ef6877456d017c9d5bb Mon Sep 17 00:00:00 2001
-From: Min RK <benjaminrk@gmail.com>
-Date: Tue, 8 Mar 2016 09:17:05 +0100
-Subject: [PATCH] remove unused, deprecated `_handle`
-
-Cython 0.24 may not support property assignment
----
- zmq/backend/cython/context.pyx | 8 ++------
- 1 file changed, 2 insertions(+), 6 deletions(-)
-
-diff --git a/zmq/backend/cython/context.pyx b/zmq/backend/cython/context.pyx
-index 2cb7409..3595c10 100644
---- a/zmq/backend/cython/context.pyx
-+++ b/zmq/backend/cython/context.pyx
-@@ -108,16 +108,12 @@ cdef class Context:
-             if self._n_sockets:
-                 # move last handle to closed socket's index
-                 self._sockets[idx] = self._sockets[self._n_sockets]
--    
--    
-+
-     @property
-     def underlying(self):
-         """The address of the underlying libzmq context"""
-         return <size_t> self.handle
--    
--    # backward-compat, though nobody is using it
--    _handle = underlying
--    
-+
-     cdef inline int _term(self):
-         cdef int rc=0
-         if self.handle != NULL and not self.closed and getpid() == self._pid: