Update overview.mdx (#71)

removal of the XYZ RAF info

pages/concepts/azuro-score/overview.mdx

@@ -53,13 +53,6 @@ import { PageHeadline, Callout, Button, Formula } from 'components'
 />
 
 
-### Refer friends
-(to https://bookmaker.XYZ)
-
-You can get up to 15% of the Azuro Score points your friends earn each month. [Read more](https://docs.bookmaker.xyz/for-bookmaker.xyz-users/refer-a-friend)
-
-
-
 ---
 <Callout type="info">
   As of Nov 10, 2023, liquidity added to the Polygon USDT pool earns 3x the Azuro Score points (i.e. 3 * 1.05=3.15) ! This boost will remain in place at least until the Polygon pool hits 7M USDT in size!