simplify config

Author: sobolev-igor

hardhat.config.ts

@@ -180,35 +180,7 @@ const config: HardhatUserConfig = {
     },
   },
   etherscan: {
-    apiKey: {
-      abstract: process.env.BLOCK_EXPLORER_API_KEY ? process.env.BLOCK_EXPLORER_API_KEY.toString() : '',
-      arbitrumOne: process.env.BLOCK_EXPLORER_API_KEY ? process.env.BLOCK_EXPLORER_API_KEY.toString() : '',
-      aurora: process.env.BLOCK_EXPLORER_API_KEY ? process.env.BLOCK_EXPLORER_API_KEY.toString() : '',
-      avalanche: process.env.BLOCK_EXPLORER_API_KEY ? process.env.BLOCK_EXPLORER_API_KEY.toString() : '',
-      base: process.env.BLOCK_EXPLORER_API_KEY ? process.env.BLOCK_EXPLORER_API_KEY.toString() : '',
-      berachain: process.env.BLOCK_EXPLORER_API_KEY ? process.env.BLOCK_EXPLORER_API_KEY.toString() : '',
-      blast: process.env.BLOCK_EXPLORER_API_KEY ? process.env.BLOCK_EXPLORER_API_KEY.toString() : '',
-      bsc: process.env.BLOCK_EXPLORER_API_KEY ? process.env.BLOCK_EXPLORER_API_KEY.toString() : '',
-      celo: process.env.BLOCK_EXPLORER_API_KEY ? process.env.BLOCK_EXPLORER_API_KEY.toString() : '',
-      xdai: process.env.BLOCK_EXPLORER_API_KEY ? process.env.BLOCK_EXPLORER_API_KEY.toString() : '',
-      ink: process.env.BLOCK_EXPLORER_API_KEY ? process.env.BLOCK_EXPLORER_API_KEY.toString() : '',
-      linea: process.env.BLOCK_EXPLORER_API_KEY ? process.env.BLOCK_EXPLORER_API_KEY.toString() : '',
-      mainnet: process.env.BLOCK_EXPLORER_API_KEY ? process.env.BLOCK_EXPLORER_API_KEY.toString() : '',
-      mantle: process.env.BLOCK_EXPLORER_API_KEY ? process.env.BLOCK_EXPLORER_API_KEY.toString() : '',
-      mode: process.env.BLOCK_EXPLORER_API_KEY ? process.env.BLOCK_EXPLORER_API_KEY.toString() : '',
-      opera: process.env.BLOCK_EXPLORER_API_KEY ? process.env.BLOCK_EXPLORER_API_KEY.toString() : '',
-      optimisticEthereum: process.env.BLOCK_EXPLORER_API_KEY ? process.env.BLOCK_EXPLORER_API_KEY.toString() : '',
-      polygon: process.env.BLOCK_EXPLORER_API_KEY ? process.env.BLOCK_EXPLORER_API_KEY.toString() : '',
-      'polygon-zkevm': process.env.BLOCK_EXPLORER_API_KEY ? process.env.BLOCK_EXPLORER_API_KEY.toString() : '',
-      scroll: process.env.BLOCK_EXPLORER_API_KEY ? process.env.BLOCK_EXPLORER_API_KEY.toString() : '',
-      soneium: process.env.BLOCK_EXPLORER_API_KEY ? process.env.BLOCK_EXPLORER_API_KEY.toString() : '',
-      sonic: process.env.BLOCK_EXPLORER_API_KEY ? process.env.BLOCK_EXPLORER_API_KEY.toString() : '',
-      taiko: process.env.BLOCK_EXPLORER_API_KEY ? process.env.BLOCK_EXPLORER_API_KEY.toString() : '',
-      xlayer: process.env.BLOCK_EXPLORER_API_KEY ? process.env.BLOCK_EXPLORER_API_KEY.toString() : '',
-      unichain: process.env.BLOCK_EXPLORER_API_KEY ? process.env.BLOCK_EXPLORER_API_KEY.toString() : '',
-      zora: process.env.BLOCK_EXPLORER_API_KEY ? process.env.BLOCK_EXPLORER_API_KEY.toString() : '',
-      zero: process.env.BLOCK_EXPLORER_API_KEY ? process.env.BLOCK_EXPLORER_API_KEY.toString() : '',
-    },
+    apiKey: process.env.BLOCK_EXPLORER_API_KEY ? process.env.BLOCK_EXPLORER_API_KEY.toString() : '',
     customChains: [
       {
         network: 'celo',