[gnome-continuous-yocto/gnomeostree-3.28-rocko: 6863/8267] ghostscript: remove legacy patch png_mak.patch

[Emmanuele Bassi <ebassi src gnome org>]

commit 744460e9f21122f89dca0f5c7bcd0d95d87a1719
Author: Kai Kang <kai kang windriver com>
Date:   Mon Jul 17 16:40:39 2017 +0800

    ghostscript: remove legacy patch png_mak.patch
    
    png_mak.patch was created for ghostscript 9.16 and causes make circular
    dependency now. Check source code base/png.mak after apply png_mak.patch:
    
    Line 77: $(MAKEDIRS) : $(pnglibconf_h)
    Line 83: $(pnglibconf_h) : $(PNGSRC)scripts$(D)pnglibconf.h.prebuilt $(TOP_MAKEFILES) $(MAKEDIRS)
    
    So remove png_mak.patch.
    
    (From OE-Core rev: 8a5890cc0b0a6c110edb36aec3614c3ebeb54e24)
    
    Signed-off-by: Kai Kang <kai kang windriver com>
    Signed-off-by: Ross Burton <ross burton intel com>
    Signed-off-by: Richard Purdie <richard purdie linuxfoundation org>

 .../ghostscript/ghostscript/png_mak.patch          |   32 --------------------
 .../ghostscript/ghostscript_9.21.bb                |    1 -
 2 files changed, 0 insertions(+), 33 deletions(-)
---
diff --git a/meta/recipes-extended/ghostscript/ghostscript_9.21.bb 
b/meta/recipes-extended/ghostscript/ghostscript_9.21.bb
index fb36a13..adad9fd 100644
--- a/meta/recipes-extended/ghostscript/ghostscript_9.21.bb
+++ b/meta/recipes-extended/ghostscript/ghostscript_9.21.bb
@@ -22,7 +22,6 @@ UPSTREAM_CHECK_REGEX = "(?P<pver>\d+(\.\d+)+)\.tar"
 SRC_URI_BASE = 
"https://github.com/ArtifexSoftware/ghostpdl-downloads/releases/download/gs921/${BPN}-${PV}.tar.gz \
                 file://ghostscript-9.15-parallel-make.patch \
                 file://ghostscript-9.16-Werror-return-type.patch \
-                file://png_mak.patch \
                 file://do-not-check-local-libpng-source.patch \
                 file://avoid-host-contamination.patch \
                 file://mkdir-p.patch \