How to prune the indices of bitocoind / txindex?

In ~ / .bitcoin / bitcoin.conf I put it plum = 5000.

That reduced the blockchain size to 5G.

du -sch / mnt / btrfs / bitcoind / *
...
5.0G / mnt / btrfs / bitcoind / blocks
2.8G / mnt / btrfs / bitcoind / chainstate
17G / mnt / btrfs / bitcoind / indexes
....
Total 25G

This is really an improvement of x10, before pruning, my bitcoind data directory was approximately 250G. However, it is still 25G total. I need to run a small SD card where there is only 10 G of free space.

Now /mnt/btrfs/bitcoind/indexes/txindex/*.ldb The archives occupy most of the space, 17G.

Is there any way to prune the txindex / * files. Ldb?