dev-libs/libebml: remove unused patch(es)

Signed-off-by: Michael Mair-Keimberger <mmk@levelnine.at>
Closes: https://github.com/gentoo/gentoo/pull/28818
Signed-off-by: Conrad Kostecki <conikost@gentoo.org>

dev-libs/libebml/files/libebml-1.4.2-header-fixes-for-gcc11.patch

@@ -1,26 +0,0 @@
-From f0bfd53647961e799a43d918c46cf3b6bff89806 Mon Sep 17 00:00:00 2001
-From: Moritz Bunkus <mo@bunkus.online>
-Date: Sat, 27 Feb 2021 20:36:52 +0100
-Subject: [PATCH] include appropriate header files for std::numeric_limits
-
-Fixes #80.
---- a/src/EbmlString.cpp
-+++ b/src/EbmlString.cpp
-@@ -34,6 +34,7 @@
-   \author Steve Lhomme     <robux4 @ users.sf.net>
- */
- #include <cassert>
-+#include <limits>
- 
- #include "ebml/EbmlString.h"
- 
---- a/src/EbmlUnicodeString.cpp
-+++ b/src/EbmlUnicodeString.cpp
-@@ -36,6 +36,7 @@
- */
- 
- #include <cassert>
-+#include <limits>
- 
- #include "ebml/EbmlUnicodeString.h"
-