File don-t-mark-libpng-as-required-library.patch of Package freetype2

Index: freetype-2.9/builds/unix/configure
===================================================================
--- freetype-2.9.orig/builds/unix/configure
+++ freetype-2.9/builds/unix/configure
@@ -14487,7 +14487,6 @@ esac
 # entries in Requires.private are separated by commas;
 REQUIRES_PRIVATE="$zlib_reqpriv,     \
                   $bzip2_reqpriv,    \
-                  $libpng_reqpriv,   \
                   $harfbuzz_reqpriv"
 # beautify
 REQUIRES_PRIVATE=`echo "$REQUIRES_PRIVATE" \
@@ -14501,7 +14500,6 @@ REQUIRES_PRIVATE=`echo "$REQUIRES_PRIVAT
 
 LIBS_PRIVATE="$zlib_libspriv     \
               $bzip2_libspriv    \
-              $libpng_libspriv   \
               $harfbuzz_libspriv \
               $ft2_extra_libs"
 # beautify
@@ -14513,7 +14511,6 @@ LIBS_PRIVATE=`echo "$LIBS_PRIVATE"  \
 LIBSSTATIC_CONFIG="-lfreetype               \
                    $zlib_libsstaticconf     \
                    $bzip2_libsstaticconf    \
-                   $libpng_libsstaticconf   \
                    $harfbuzz_libsstaticconf \
                    $ft2_extra_libs"
 # remove -L/usr/lib and -L/usr/lib64 since `freetype-config' adds them later
Index: freetype-2.9/builds/unix/configure.raw
===================================================================
--- freetype-2.9.orig/builds/unix/configure.raw
+++ freetype-2.9/builds/unix/configure.raw
@@ -938,7 +938,6 @@ esac
 # entries in Requires.private are separated by commas;
 REQUIRES_PRIVATE="$zlib_reqpriv,     \
                   $bzip2_reqpriv,    \
-                  $libpng_reqpriv,   \
                   $harfbuzz_reqpriv"
 # beautify
 REQUIRES_PRIVATE=`echo "$REQUIRES_PRIVATE" \
@@ -952,7 +951,6 @@ REQUIRES_PRIVATE=`echo "$REQUIRES_PRIVAT
 
 LIBS_PRIVATE="$zlib_libspriv     \
               $bzip2_libspriv    \
-              $libpng_libspriv   \
               $harfbuzz_libspriv \
               $ft2_extra_libs"
 # beautify
@@ -964,7 +962,6 @@ LIBS_PRIVATE=`echo "$LIBS_PRIVATE"  \
 LIBSSTATIC_CONFIG="-lfreetype               \
                    $zlib_libsstaticconf     \
                    $bzip2_libsstaticconf    \
-                   $libpng_libsstaticconf   \
                    $harfbuzz_libsstaticconf \
                    $ft2_extra_libs"
 # remove -L/usr/lib and -L/usr/lib64 since `freetype-config' adds them later