File libpinyin-avoid_download_at_buildtime.patch of Package libpinyin

diff -Nur libpinyin-2.1.91/data/Makefile.am libpinyin-2.1.91-new/data/Makefile.am
--- libpinyin-2.1.91/data/Makefile.am	2018-01-02 15:07:06.000000000 +0800
+++ libpinyin-2.1.91-new/data/Makefile.am	2018-03-05 10:57:49.825387908 +0800
@@ -48,7 +48,6 @@
 CLEANFILES		= $(binary_model_data)
 
 interpolation2.text:
-	wget http://downloads.sourceforge.net/libpinyin/models/model15.text.tar.gz
 	tar xvf model15.text.tar.gz -C $(top_srcdir)/data