Remove Hyperledger Burrow from EVM implementatinos

Hyperledger Burrow has reached End of Life

Author: Hugh

src/content/developers/docs/evm/index.md

@@ -67,7 +67,6 @@ All [Ethereum clients](/developers/docs/nodes-and-clients/#execution-clients) in
 - [evmone](https://github.com/ethereum/evmone) - _C++_
 - [ethereumjs-vm](https://github.com/ethereumjs/ethereumjs-vm) - _JavaScript_
 - [eEVM](https://github.com/microsoft/eevm) - _C++_
-- [Hyperledger Burrow](https://github.com/hyperledger/burrow) - _Go_
 
 ## Further Reading {#further-reading}