[chronik] Disable the Write Ahead Log for rocksdb
Summary:
We don't need the feature, and it doesn't play nicely with qemu.
Depends on D14983.
Test Plan:
With chronik:
ninja check-functional
Reviewers: #bitcoin_abc, PiRK
Reviewed By: #bitcoin_abc, PiRK
Differential Revision: https://reviews.bitcoinabc.org/D14815