removed duplicate file

src/pages/index.md

@@ -1,21 +0,0 @@
----
-title: Stacks documentation
-description: Learn about Stacks mining, the STX token, and the Clarity smart contract language
----
-
--> Content related to developer tools and app development has recently moved to [docs.hiro.so](https://docs.hiro.so/). For more information on the content move, see [this post](https://forum.stacks.org/t/the-evolution-of-the-stacks-documentation-and-a-new-hiro-docs-site/12343) on the Stacks forum.
-
-## Understand Stacks
-
-[@page-reference | grid]
-| /understand-stacks/overview, /understand-stacks/proof-of-transfer, /understand-stacks/testnet
-
-## Write smart contracts
-
-[@page-reference | grid]
-| /write-smart-contracts/overview, /write-smart-contracts/tokens
-
-## Start mining
-
-[@page-reference | grid]
-| /start-mining/mainnet, /start-mining/testnet