Clean up code styles

.eslintrc.js

   root: true,
   extends: '@react-native-community',
   rules: {
-    'prettier/prettier': [
-      {
-        singleQuote: true
-      }
-    ],
-    'comma-dangle': 'off'
+    'comma-dangle': 'off',
+    'no-unused-vars': 'error'
   }
 };

autoHeightWebView/index.js

 
 const AutoHeightWebView = React.memo(
   forwardRef((props, ref) => {
-    const { style, onMessage, onSizeUpdated, scrollEnabledWithZoomedin, scrollEnabled, source } = props;
-
-    if (!source) {
-      return null;
-    }
+    const { style, onMessage, onSizeUpdated, scrollEnabledWithZoomedin, scrollEnabled } = props;
 
     let webView = useRef();
     useImperativeHandle(ref, () => ({