graphviz: remove unused patch files

* they were removed from SRC_URI in:
  https://git.openembedded.org/meta-openembedded/commit/?id=edc38751dc1a0141c8f5f93f6650ca2d11b792bc

Signed-off-by: Martin Jansa <Martin.Jansa@gmail.com>
Signed-off-by: Khem Raj <raj.khem@gmail.com>

meta-oe/recipes-graphics/graphviz/graphviz/0001-Use-native-mkdefs.patch

@@ -1,26 +0,0 @@
-From 5e53b643615fd53f3ff960521bbe9d95641e5f68 Mon Sep 17 00:00:00 2001
-From: =?UTF-8?q?Andreas=20M=C3=BCller?= <schnitzeltony@gmail.com>
-Date: Sun, 20 Jan 2019 23:58:29 +0100
-Subject: [PATCH] Use native mkdefs
-MIME-Version: 1.0
-Content-Type: text/plain; charset=UTF-8
-Content-Transfer-Encoding: 8bit
-
-Upstream-Status: Inappropriate [embedded specific]
-
-Signed-off-by: Andreas Müller <schnitzeltony@gmail.com>
----
- lib/gvpr/Makefile.am | 2 +-
- 1 file changed, 1 insertion(+), 1 deletion(-)
-
---- a/lib/gvpr/Makefile.am
-+++ b/lib/gvpr/Makefile.am
-@@ -59,7 +59,7 @@ mkdefs$(EXEEXT):
- 	$(HOSTCC) $(srcdir)/mkdefs.c -o mkdefs$(EXEEXT)
- 
- gdefs.h: $(top_srcdir)/lib/gvpr/gprdata mkdefs$(EXEEXT)
--	./mkdefs$(EXEEXT) gdefs.h < $(top_srcdir)/lib/gvpr/gprdata
-+	mkdefs$(EXEEXT) gdefs.h < $(top_srcdir)/lib/gvpr/gprdata
- 
- EXTRA_DIST = $(man_MANS) $(pdf_DATA) gprdata mkdefs.c gdefs.h trie.c gvprlib.vcxproj*
- 

meta-oe/recipes-graphics/graphviz/graphviz/0001-plugin-pango-Include-freetype-headers-explicitly.patch

@@ -1,33 +0,0 @@
-From 926d9285f3367ae1bdb9ce1dce95f7de73b3a980 Mon Sep 17 00:00:00 2001
-From: Khem Raj <raj.khem@gmail.com>
-Date: Tue, 6 Aug 2019 12:42:19 -0700
-Subject: [PATCH] plugin/pango: Include freetype headers explicitly
-MIME-Version: 1.0
-Content-Type: text/plain; charset=UTF-8
-Content-Transfer-Encoding: 8bit
-
-Do not depend on pango automatically adding these headers
-Fixes
-| gvtextlayout_pango.c:140:10: error: unknown type name ‘FT_Face’
-|          FT_Face face;
-|          ^~~~~~~
-
-Upstream-Status: Pending
-Signed-off-by: Khem Raj <raj.khem@gmail.com>
----
- plugin/pango/gvtextlayout_pango.c | 4 ++++
- 1 file changed, 4 insertions(+)
-
---- a/plugin/pango/gvtextlayout_pango.c
-+++ b/plugin/pango/gvtextlayout_pango.c
-@@ -15,6 +15,10 @@
- 
- #include <stdlib.h>
- #include <string.h>
-+
-+#include <ft2build.h>
-+#include FT_FREETYPE_H
-+
- #include "gvplugin_render.h"
- #include "agxbuf.h"
- #include "utils.h"