Stop translating command line options (continuated)

Summary:
This diff removes the leftovers from D4515 and removes translations
later introduced for the seeder CLI options.

Test Plan:

ninja check check-functional
bitcoind --help
bitcoin-cli --help
bitcoin-seeder --help

Reviewers: #bitcoin_abc, deadalnix

Reviewed By: #bitcoin_abc, deadalnix

Differential Revision: https://reviews.bitcoinabc.org/D5795