Bump wallet version to 190700 and remove the usehd option
Summary:
Bump the wallet version number to 190700 so that new wallets made without a default key will no longer work on previous versions at all. Also remove the usehd option to avoid weird interaction with wallet version numbers and HD-ness of wallets.
Backport of core PR11250 and PR11285
https://github.com/bitcoin/bitcoin/pull/11250/files
https://github.com/bitcoin/bitcoin/pull/11285/files
Test Plan:
make check ./test/functional/test_runner.py wallet_*
Reviewers: #bitcoin_abc, deadalnix
Reviewed By: #bitcoin_abc, deadalnix
Differential Revision: https://reviews.bitcoinabc.org/D3128