Removing lock from storage account to delete role assignment

Removing lock from storage account for deleting role assignment. Will revert it back after deletion.

Plan :

  - resource "azurerm_management_lock" "system_sa_lock" {
      - id         = "/subscriptions/7c052588-ead2-45c9-9346-5b156a157bd1/resourceGroups/osdu-mvp-srdev-z98y-rg/providers/Microsoft.Storage/storageAccounts/osdumvpsrdevz98ydata/providers/Microsoft.Authorization/locks/osdu_system_sa_lock" -> null
      - lock_level = "CanNotDelete" -> null
      - name       = "osdu_system_sa_lock" -> null
      - scope      = "/subscriptions/7c052588-ead2-45c9-9346-5b156a157bd1/resourceGroups/osdu-mvp-srdev-z98y-rg/providers/Microsoft.Storage/storageAccounts/osdumvpsrdevz98ydata" -> null
    }