fix(bil): remove validation code mentions (#4885)

Author: jsudraud

macros/console/create-account.mdx

@@ -41,12 +41,4 @@ Fill out the required fields, then click **Add billing address**. This address w
 
 ### Add your payment method
 Enter your credit card information, then click **Add payment method**. We will send you an authorization charge of €1, which will be automatically reimbursed within two days. A [3D Secure](https://en.wikipedia.org/wiki/3-D_Secure) validation is initiated. Depending on your bank, you may be asked to enter a code received by SMS or to confirm via an application on your smartphone.
-Note that prepaid cards and some virtual cards are not accepted as a payment method.
-
-### Validate your payment method
-<Message type="note">
-  This step is necessary for security purposes, but does not prevent you from using Scaleway resources. **You have 10 days to validate your credit card** once it's added.
-</Message>
-When checking your bank statement, look for a €1 transaction labeled "SCW", followed by a 4-digit code (e.g., SCW* C-1234).
-1. Enter the 4-digit code.
-2. Click **Verify payment method**.
+Note that prepaid cards and some virtual cards are not accepted as a payment method.

pages/billing/quickstart.mdx

@@ -34,23 +34,13 @@ You can choose between two payment methods: **credit card** or **SEPA mandate**.
 
 ### How to add a credit card
 
-1. Enter the details of your credit or debit card.
-2. Click **Add credit card** to confirm. A [3D Secure](https://en.wikipedia.org/wiki/3-D_Secure) validation is initiated. Depending on your bank, you may be asked to enter a code received by SMS or via an application on your smartphone.
-3. Enter the code and validate the form.
-    <Message type="note">
-     When you register a new credit card, an authorization charge of **€1** is debited from your account. This authorization charge is a **dummy transaction made to check the validity of the card, and will carry a 4-digit validation code**, displayed on **your bank account statement**. The authorization charge will be reimbursed within 48 to 72 hours.
-    </Message>
-4. Click **Verify**. A pop-up appears.
-5. Enter the 4-digit validation code displayed on your bank account statement.
-    <Message type="note">
-      Bank account statements have different displays depending on the bank, but the validation code can always be found in the description of your transactions. The image below provides an example of how the validation code might appear in your bank statement:
-
-      <Lightbox src="scaleway-bank-statement.webp" alt="Screenshot of a bank account statement. Under the transactions section, an entry called SCW*C-6569E-COMMERCE displays. The validation code is represented by the number sequence" />
-    </Message>
-
-<Message type="important">
-  You have up to 10 days to enter your validation code in the console. This helps us secure your account.
-</Message>
+1. Access the [Scaleway console](https://console.scaleway.com/organization).
+2. On the **Billing** page, click the [Payment and billing](https://console.scaleway.com/billing/payment) tab.
+3. Scroll down to **Payment methods** and open the **Credit card** tab.
+4. Click the **Add a credit card** button. A pop-up appears.
+5. Enter the details of your credit or debit card.
+6. Click **Add credit card** to confirm. A [3D Secure](https://en.wikipedia.org/wiki/3-D_Secure) validation is initiated. Depending on your bank, you may be asked to enter a code received by SMS or via an application on your smartphone.
+7. Enter the code and validate the form.
 
 ### How to add a SEPA mandate