Remove a patch that was taken from upstream.

audio/pulseaudio/patches/patch-src_modules_rtp_rtp.c

@@ -1,38 +0,0 @@
-$NetBSD: patch-src_modules_rtp_rtp.c,v 1.3 2014/08/07 07:43:48 spz Exp $
-
-fix for CVE-2014-3970 taken from pulseaudio git
-
---- src/modules/rtp/rtp.c.orig	2014-01-23 18:57:55.000000000 +0000
-+++ src/modules/rtp/rtp.c
-@@ -182,8 +182,29 @@ int pa_rtp_recv(pa_rtp_context *c, pa_me
-         goto fail;
-     }
- 
--    if (size <= 0)
--        return 0;
-+    if (size <= 0) {
-+        /* size can be 0 due to any of the following reasons:
-+         *
-+         * 1. Somebody sent us a perfectly valid zero-length UDP packet.
-+         * 2. Somebody sent us a UDP packet with a bad CRC.
-+         *
-+         * It is unknown whether size can actually be less than zero.
-+         *
-+         * In the first case, the packet has to be read out, otherwise the
-+         * kernel will tell us again and again about it, thus preventing
-+         * reception of any further packets. So let's just read it out
-+         * now and discard it later, when comparing the number of bytes
-+         * received (0) with the number of bytes wanted (1, see below).
-+         *
-+         * In the second case, recvmsg() will fail, thus allowing us to
-+         * return the error.
-+         *
-+         * Just to avoid passing zero-sized memchunks and NULL pointers to
-+         * recvmsg(), let's force allocation of at least one byte by setting
-+         * size to 1.
-+         */
-+        size = 1;
-+    }
- 
-     if (c->memchunk.length < (unsigned) size) {
-         size_t l;