Simplify ncurses build to only wide version

Removed narrow version build process for ncurses.

Author: cxzhong

build/pkgs/ncurses/spkg-install.in

@@ -7,36 +7,7 @@ fi
 
 cd src
 
-# Ncurses cannot build narrow and wide (unicode, --enable-widec)
-# versions in one go. Need to compile twice. Note that Python's curses
-# module will want the wide version, and readline the narrow version.
-
-###################################################
-mkdir narrow
-cd narrow
-ln -s ../configure .
-
-echo "Configuring ncurses (narrow)..."
-sdh_configure --with-termlib \
-              --with-shared \
-              --without-normal \
-              --without-ada \
-              --disable-rpath-hack \
-              --enable-overwrite \
-              --with-pkg-config-libdir="$SAGE_LOCAL/lib/pkgconfig" \
-              --enable-pc-files \
-              --without-cxx \
-              --without-cxx-binding \
-              "$DEBUG_CONFIGURE_FLAG"
-
-echo "Building ncurses (narrow)..."
-sdh_make
-
-echo "Installing ncurses (narrow)..."
-sdh_make_install
-
-cd ..  # leave narrow
-
+# Ncurses is built with wide version(unicode, --enable-widec) Now.
 ###################################################
 mkdir wide
 cd wide