Run eslint --fix

Summary:
CI is currently failing because of a lint issue, this fixes it and a bunch of other warnings that are auto-fixable.

**Test plan**
Quick manual test, cosmetic changes only.
Closes https://github.com/facebook/react-native/pull/16229

Differential Revision: D6009748

Pulled By: TheSavior

fbshipit-source-id: cabd44fed99dd90bd0b35626492719c139c89f34

RNTester/js/TVEventHandlerExample.js

@@ -48,7 +48,7 @@ class TVEventHandlerView extends React.Component<$FlowFixMeProps, {
     this._tvEventHandler.enable(this, function(cmp, evt) {
       cmp.setState({
         lastEventType: evt.eventType
-      })
+      });
     });
   }