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, 37 deletions

diff --git a/src/3rdparty/libmng/doc/man/jng.5 b/src/3rdparty/libmng/doc/man/jng.5
deleted file mode 100644
index 0e371ad..0000000
--- a/src/3rdparty/libmng/doc/man/jng.5
+++ /dev/null
@@ -1,37 +0,0 @@
-.TH JNG 5 "July 26, 2000"
-.SH NAME
-jng \- JPEG Network Graphics (JNG) sub-format
-.SH DESCRIPTION
-JNG (JPEG Network Graphics) is a sub-format of the MNG (Multiple-image
-Network Graphics) format. As with MNG it extends on the features of the
-popular PNG (Portable Network Graphics) image-format. 
-.br
-
-This sub-format was designed to support a lossy compression-method.
-It is based completely on the JPEG specification. It adds the high-compression
-ratios of JPEG for photographic images.
-
-As a member of the Network Graphics family, JNG was deemed adequate as a
-stand-alone format as it extends the JPEG format with color-correction and
-transparency features.
-
-.SH "SEE ALSO"
-.IR png(5) ", " mng(5) ", " libmng(3)
-.LP
-MNG 1.00, February 9, 2001:
-.IP
-http://www.libpng.org/pub/mng
-
-.SH AUTHORS
-This man page: Gerard Juyn
-.LP
-Multiple-image Network Graphics (MNG) Specification Version 1.00 (Februari 9, 2001):
-Glenn Randers-Pehrson and others (png-list@ccrc.wustl.edu).
-.LP
-
-.SH COPYRIGHT NOTICE
-The MNG-1.00 specification is copyright (c) 1998-2001 Glenn Randers-Pehrson.
-See the specification for conditions of use and distribution.
-.LP
-.\" end of man page
-