maemo/hildon-desktop: Remove obsolete "patch" (!131)

maemo/hildon-desktop/APKBUILD

@@ -20,7 +20,6 @@ builddir="$srcdir/hildon-desktop-$pkgver"
 
 prepare() {
 	cd "$builddir"
-	sed -i -e 's/libpng12/libpng/g' configure.ac
 	sed -i -e 's/g_return_if_fail (!render_manager->priv->zoomed);//g' src/home/hd-render-manager.c
 }