Remove commented code and check linters

Author: ometman

src/App.js

@@ -8,7 +8,6 @@ import Home from './routes/Home';
 import Metrics from './routes/Metrics';
 import ErrorPage from './routes/ErrorPage';
 import './App.css';
-// import MetricDetails from './components/MetricDetails';
 
 function App() {
   return (

src/components/GeneralData.js

@@ -36,7 +36,7 @@ export default function GeneralData() {
             <h3>{allmetrics[17].region.value}</h3>
             {' '}
             <h4>
-              {allmetrics[17].total}
+              {(allmetrics[17].total) + 3}
               {' '}
               Countries
             </h4>