delete outdated references 03-secp.mdx

content/05-cardano-testnet/02-about/03-secp.mdx

@@ -5,14 +5,6 @@ metaTitle: Valentine (SECP) upgrade
 
 The Valentine (or SECP) upgrade is Cardano’s intra-era hard fork that follows the [Vasil upgrade](https://docs.cardano.org/cardano-testnet/about/testnet-introduction). Valentine is a small and focused semantic change to the ledger, which brings new built-in functions to Plutus to support SECP elliptic curves (ECDSA and Schnorr). Although an intra-era hard fork requires a hard fork combinator event, it does not change the ledger era, which means that this is an upgrade to the Babbage era (Vasil functionality).
 
-## Live on Cardano testnets
-
-Support for SECP256k1 is currently live on Cardano’s [preview](https://book.world.dev.cardano.org/environments.html#preview-testnet) testing environment. The upgrade is planned to go live on the [pre-production](https://book.world.dev.cardano.org/environments.html#pre-production-testnet) testing environment on February 11, 2023 at 00:00 UTC.
-
-The community is encouraged to try out Valentine functionality before the mainnet release, which is proposed tentatively for February 14, 2023 at 21:44:51 UTC.
-
-The current mainnet node, v.1.35.5, supports the SECP upgrade. To track the latest versions of the node and all downstream components, see [these release notes](https://docs.cardano.org/tools/release-notes) and the [compatibility matrix](https://docs.cardano.org/tools/comp-matrix).
-
 To get started:
 
 -   check the ['Getting started' tutorial](https://docs.cardano.org/cardano-testnet/getting-started)