Revert "block explorers and public rpcs for new chains (#1772)"

This reverts commit d43b219.

Author: 0237h

.changeset/swift-bottles-trade.md

@@ -352,12 +352,6 @@ const getEtherscanLikeAPIUrl = (network: string) => {
       return 'https://unichain-sepolia.blockscout.com/api';
     case 'lens-testnet':
       return 'https://block-explorer-api.testnet.lens.dev/api';
-    case 'abstract-testnet':
-      return 'https://block-explorer-api.testnet.abs.xyz/api';
-    case 'corn':
-      return 'https://maizenet-explorer.usecorn.com/api';
-    case 'corn-testnet':
-      return 'https://testnet-explorer.usecorn.com/api';
     default:
       return `https://api-${network}.etherscan.io/api`;
   }
@@ -516,12 +510,6 @@ const getPublicRPCEndpoint = (network: string) => {
       return 'https://sepolia.unichain.org';
     case 'lens-testnet':
       return 'https://api.staging.lens.zksync.dev';
-    case 'abstract-testnet':
-      return 'https://api.testnet.abs.xyz';
-    case 'corn':
-      return 'https://maizenet-rpc.usecorn.com';
-    case 'corn-testnet':
-      return 'https://testnet-rpc.usecorn.com';
     default:
       throw new Error(`Unknown network: ${network}`);
   }