fix(SDK): temporarily remove credits consumed

[bmaydan]

Why we are doing this

Credits consumed only showed amortized credits consumed for reservations, not for every resource type, which would confuse the user.

This column will be brought back once the API endpoint correctly surfaces all credits consumed, not just reservation credits.

Example output

from lightning_sdk import Organization

org = Organization("my-org")
summary = org.get_monthly_summary(pivot=..., pivot_direction="BEFORE")
print(summary) ->
[
    {
      "periodStart": "2025-01-01T00:00:00Z",
      "periodEnd": "2025-02-01T00:00:00Z",
      "totalCreditsRemaining": (...),
      "totalCreditsPurchased": (...)
    },
    {
      "periodStart": "2025-02-01T00:00:00Z",
      "periodEnd": "2025-03-01T00:00:00Z",
      "totalCreditsRemaining": (...),
      "totalCreditsPurchased": (...)
    },
    ...
],