Remove network ID setting

Not needed anymore.

README.md

@@ -24,7 +24,6 @@ As usual in Hubot, you can add all config as environment variables.
 | `KREDITS_WALLET_PATH` | Path to an Etherum wallet JSON file (default: `./wallet.json`) |
 | `KREDITS_WALLET_PASSWORD` | Wallet password |
 | `KREDITS_PROVIDER_URL` | Ethereum JSON-RPC URL (default: `http://localhost:7545`) |
-| `KREDITS_NETWORK_ID` | The ethereum network ID to use (default: 100 = local) |
 
 ## Integrations
 

index.js

@@ -7,7 +7,6 @@ const Kredits = require('kredits-contracts');
 const walletPath  = process.env.KREDITS_WALLET_PATH || './wallet.json';
 const walletJson  = fs.readFileSync(walletPath);
 const providerUrl = process.env.KREDITS_PROVIDER_URL;
-const networkId = parseInt(process.env.KREDITS_NETWORK_ID || 100);
 
 const ipfsConfig = {
   host: process.env.IPFS_API_HOST || 'localhost',