fix: fixed env example

Author: sendra

.env.example

@@ -1,10 +1,3 @@
-# Deployment via ledger
-MNEMONIC_INDEX=
-LEDGER_SENDER=
-
-# Deployment via private key
-PRIVATE_KEY=
-
 # Rpcs for running the tests
 RPC_MAINNET=https://rpc.flashbots.net
 RPC_MAINNET_TESTNET=https://ethereum-sepolia.publicnode.com
@@ -33,17 +26,8 @@ RPC_SCROLL=https://rpc.scroll.io
 RPC_SCROLL_TESTNET=https://sepolia-rpc.scroll.io
 RPC_CELO=https://forno.celo.org
 RPC_CELO_ALFAJORES=https://alfajores-forno.celo-testnet.org
+RPC_ZK_SYNC=https://zksync.drpc.org
+RPC_LINEA=https://linea-rpc.publicnode.com
+RPC_SONEIUM=https://rpc.soneium.org
+RPC_INK=https://ink.drpc.org
 
-# Etherscan verification
-ETHERSCAN_API_KEY_MAINNET=
-ETHERSCAN_API_KEY_POLYGON=
-ETHERSCAN_API_KEY_AVALANCHE=
-ETHERSCAN_API_KEY_FANTOM=
-ETHERSCAN_API_KEY_OPTIMISM=
-ETHERSCAN_API_KEY_ARBITRUM=
-ETHERSCAN_API_KEY_BINANCE=
-ETHERSCAN_API_KEY_BASE=
-ETHERSCAN_API_KEY_GNOSIS=
-ETHERSCAN_API_KEY_ZKEVM=
-ETHERSCAN_API_KEY_SCROLL=
-ETHERSCAN_API_KEY_CELO=