Revert "gnu: libxml2: Add fix for CVE-2016-1762."

This reverts commit 6e4f18cfdd.

gnu/local.mk

@@ -633,7 +633,6 @@ dist_patch_DATA =						\
   %D%/packages/patches/libwmf-CVE-2015-0848+CVE-2015-4588.patch	\
   %D%/packages/patches/libwmf-CVE-2015-4695.patch		\
   %D%/packages/patches/libwmf-CVE-2015-4696.patch		\
-  %D%/packages/patches/libxml2-CVE-2016-1762.patch		\
   %D%/packages/patches/libxslt-CVE-2015-7995.patch		\
   %D%/packages/patches/lirc-localstatedir.patch			\
   %D%/packages/patches/libpthread-glibc-preparation.patch	\

gnu/packages/patches/libxml2-CVE-2016-1762.patch

@@ -1,31 +0,0 @@
-Copied from Debian.
-
-From a7a94612aa3b16779e2c74e1fa353b5d9786c602 Mon Sep 17 00:00:00 2001
-From: Daniel Veillard <veillard@redhat.com>
-Date: Tue, 9 Feb 2016 12:55:29 +0100
-Subject: [PATCH] Heap-based buffer overread in xmlNextChar
-
-For https://bugzilla.gnome.org/show_bug.cgi?id=759671
-
-when the end of the internal subset isn't properly detected
-xmlParseInternalSubset should just return instead of trying
-to process input further.
-
-[carnil: drop patches to testsuite files]
----
-
-diff --git a/parser.c b/parser.c
-index c5741e3..0677030 100644
---- a/parser.c
-+++ b/parser.c
-@@ -8468,6 +8468,7 @@ xmlParseInternalSubset(xmlParserCtxtPtr ctxt) {
-      */
-     if (RAW != '>') {
- 	xmlFatalErr(ctxt, XML_ERR_DOCTYPE_NOT_FINISHED, NULL);
-+	return;
-     }
-     NEXT;
- }
--- 
-2.8.1
-

gnu/packages/xml.scm

@@ -116,8 +116,7 @@ (define libxml2/fixed
                              version ".tar.gz"))
          (sha256
           (base32
-           "0g336cr0bw6dax1q48bblphmchgihx9p1pjmxdnrd6sh3qci3fgz"))
-         (patches (search-patches "libxml2-CVE-2016-1762.patch")))))))
+           "0g336cr0bw6dax1q48bblphmchgihx9p1pjmxdnrd6sh3qci3fgz")))))))
 
 (define-public python-libxml2
   (package (inherit libxml2)