chore: Fix eslint errors

frontend/pages/api/submitProofToContract.ts

@@ -1,7 +1,7 @@
 import { NextApiRequest, NextApiResponse } from "next";
 import { createPublicClient, http, createWalletClient } from "viem";
 import { privateKeyToAccount } from "viem/accounts";
-import { baseSepolia, sepolia } from "viem/chains";
+import { baseSepolia } from "viem/chains";
 import { config } from "dotenv";
 import { encodeAbiParameters, parseAbiParameters } from "viem";