Delete presentation requests from orgbook wallet

[ianco]

Script to delete records (and tags) from wallet

run as python delete_wallet_pres_reqs.py --id <id of a known pres req record>

options:

--count - just display the record count
--batch - number of records to delete per commit (max 1000)
--max - max number of records to delete todal

[ianco]

See bcgov/orgbook-configurations#124

[ianco]

Run with env vars as:

ORGBOOK_WALLET_DB_HOST=<host> ORGBOOK_WALLET_DB_PORT=<port>  ORGBOOK_WALLET_DB_DATABASE=<db_name> ORGBOOK_WALLET_DB_USER=<user>  ORGBOOK_WALLET_DB_PASSWORD=<pwd> python delete_wallet_pres_reqs.py --id <rec_id> --count

... for example