ipkg-make-index.sh: drop a few non-essential fields

Saves some more space on the package index

Signed-off-by: Felix Fietkau <nbd@nbd.name>

scripts/ipkg-make-index.sh

@@ -24,7 +24,7 @@ for pkg in `find $pkg_dir -name '*.ipk' | sort`; do
 	tar -xzOf $pkg ./control.tar.gz | tar xzOf - ./control | sed -e "s/^Description:/Filename: $sed_safe_pkg\\
 Size: $file_size\\
 SHA256sum: $sha256sum\\
-Description:/"
+Description:/" | grep -vE '^(Maintainer|LicenseFiles|Source|Require)'
 	echo ""
 done
 [ -n "$empty" ] && echo