docs(tap): remove outdated reference to Scalar

Author: suchapalaver

website/src/pages/en/indexing/tap.mdx

@@ -6,7 +6,7 @@ Learn about The Graph's new payment system, **GraphTally** [(previously Timeline
 
 ## Overview
 
-GraphTally is a drop-in replacement to the Scalar payment system currently in place. It provides the following key features:
+GraphTally provides the following key features:
 
 - Efficiently handles micropayments.
 - Adds a layer of consolidations to onchain transactions and costs.