Remove bundled, unmaintained libmng source codev5.12.0-beta2

[ChangeLog][Third-Party Code] The unmaintained bundled libmng has been
removed. Building the mng handler will require libmng to be present as
a system or external library.

Change-Id: I4a4805fa3f3088b5d581b92bfeabba7978bac5f7
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>

1 files changed, 0 insertions, 24 deletions

diff --git a/src/3rdparty/libmng/README.packaging b/src/3rdparty/libmng/README.packaging
deleted file mode 100644
index da0db3e..0000000
--- a/src/3rdparty/libmng/README.packaging
+++ /dev/null
@@ -1,24 +0,0 @@
-Packaging Libmng for distribution
----------------------------------
-
-These are some notes for those building binaries for distribution.
-
-We're interested to hear about anywhere libmng is helpful, so let us
-know if you're including it with your application or OS. Also, if your
-build is publicly accessible, we'd be happy to link to it from
-the libmng site.
-
-However, We respectfully request that you *not* distribute binaries as a
-shared library (DLL) with any of the major features disabled. While
-there is support for this in terms of #ifdef directives (in
-libmng_conf.h) and autoconf switches they are intended for embedded
-application and testing. The default compilation options support the
-full MNG specification, and we wish to avoid the confusion among
-general users that partial support would engender.
-
-
-Platform specific notes:
-
-We have a basic .spec file for generating rpms. Send us a note if you'd
-like to clean it up.
-