CSUB-580: Remove references to pools, ledger, and polkadot vault

[AdaJane]

No description provided.

[atodorov]

On Resources page:

• no mention of pools
• no mention of ledger
• no mention of Polkadot vault

Total Nominators section - updated, looks like this

Accounts who are staking in the network, regardless of whether they are active or inactive in the current session.
In order to stake CTC, you need to become a nominator.

Nominations section updated. Looks like this

Nominations are the validators a staker chooses to nominate. You can nominate up to 1000 validators on CreditcoinTest.
Once nominations have been submitted, bonded funds are automatically distributed to nominees that are active in the current era.
As long as at least one of your nominations is actively validating in a session, your funds will be backing that validator.

Bonding section updated, looks like this

Bonding funds is the process of 'locking' (or staking) CTC. Bonded CTC will then be automatically allocated to one or more of your nominated validators.
As a nominator, you allocate nominations yourself.
The minimum to earn rewards statistic is the minimum CTC being bonded by a nominator for the current era. This value is also the minimum amount required to receive rewards.

Active Stake Treshold section updated, looks like this

The amount of CTC needed to be actively nominating in an era.
This value applies to nominators.
Being above this metric simply guarantees that you will be present in the active nominator set for the era. This amount still does not guarantee rewards, as your active nominations may still be over-subscribed.
Only the top 512 nominators are rewarded per validator in CreditcoinTest. Ensuring your active bond is above this threshold will increase your chances of rewards.
You can keep track of these metrics from the dashboard and amend your staking position if necessary, whether increasing your bonded CTC or changing your nominations.