Remove --replay-blockchain from test service commands

The --replay-blockchain flag forces hived to clear state and replay
from scratch, which is unnecessary when starting with pre-replayed
data. Removing it allows hived to:

1. Skip replay entirely when state already matches block_log head
2. Start serving API requests immediately
3. Keep block_log in read-only mode (when combined with hive change
   to skip reopen_for_writing at stop_at_block)

This significantly reduces test job startup time and enables sharing
block_log via symlinks across parallel jobs.