NSFS | NC | removing system store requirement from nsfs.js

[romayalon]

Explain the changes

1. System store requirement initiating the constructor of the system Store which defines the db collections. while defining db collection the vacumeAnalyzer is set to run once a day so the nsfs process panics when it happens.
   currently, it's not being used so I suggest removing this requirement.

    at _do_query (/Users/romy/github/noobaa-core/src/util/postgres_client.js:250:37)
    at PostgresTable.single_query (/Users/romy/github/noobaa-core/src/util/postgres_client.js:679:16)
    at runNextTicks (node:internal/process/task_queues:60:5)
    at listOnTimeout (node:internal/timers:538:9)
    at process.processTimers (node:internal/timers:512:7)
    at async Timeout.vacuumAndAnalyze [as _onTimeout] (/Users/romy/github/noobaa-core/src/util/postgres_client.js:700:13)
/Users/romy/github/noobaa-core/src/util/postgres_client.js:250
        const res = await pg_client.query(q);
                                    ^

TypeError: Cannot read properties of undefined (reading 'query')
    at _do_query (/Users/romy/github/noobaa-core/src/util/postgres_client.js:250:37)
    at PostgresTable.single_query (/Users/romy/github/noobaa-core/src/util/postgres_client.js:679:16)
    at runNextTicks (node:internal/process/task_queues:60:5)
    at listOnTimeout (node:internal/timers:538:9)
    at process.processTimers (node:internal/timers:512:7)
    at async Timeout.vacuumAndAnalyze [as _onTimeout] (/Users/romy/github/noobaa-core/src/util/postgres_client.js:700:13)

Issues: Fixed #xxx / Gap #xxx

Testing Instructions:

• Doc added/updated
• Tests added

[naveenpaul1]

LGTM