Fix ESLint warnings using 'yarn lint --fix'

Summary:
Hi! I would like to contribute to React Native, and I am just starting out. I forked the repo and found that it has quite a lot of ESLint warnings – many of which were automatically fixable. This PR is simply the result of running `yarn lint --fix` from the root folder.

Most changes are removing trailing spaces from comments.

Haven't really done any manual testing, since I haven't done any code changes manually. `yarn test` runs fine, `yarn flow` runs fine, `yarn prettier` is satisfied.

N/A

[INTERNAL][MINOR][] - Fix ESLint warnings
Closes https://github.com/facebook/react-native/pull/18047

Differential Revision: D7054948

Pulled By: hramos

fbshipit-source-id: d53e692698d1687de5821c3fb5cdb76a5e03b71e

RNTester/js/ListExampleShared.js

@@ -199,7 +199,7 @@ function pressItem(context: Object, key: string) {
 }
 
 function renderSmallSwitchOption(context: Object, key: string) {
-  if(Platform.isTVOS) {
+  if (Platform.isTVOS) {
     return null;
   }
   return (

bots/dangerfile.js

@@ -107,7 +107,7 @@ if (issueCommandsFileModified) {
 // Warns if the PR is opened against stable, as commits need to be cherry picked and tagged by a release maintainer.
 // Fails if the PR is opened against anything other than `master` or `-stable`.
 const isMergeRefMaster = danger.github.pr.base.ref === 'master';
-const isMergeRefStable = danger.github.pr.base.ref.indexOf(`-stable`) !== -1;
+const isMergeRefStable = danger.github.pr.base.ref.indexOf('-stable') !== -1;
 if (!isMergeRefMaster && isMergeRefStable) {
   const title = ':grey_question: Base Branch';
   const idea = 'The base branch for this PR is something other than `master`. Are you sure you want to merge these changes into a stable release? If you are interested in backporting updates to an older release, the suggested approach is to land those changes on `master` first and then cherry-pick the commits into the branch for that release. The [Releases Guide](https://github.com/facebook/react-native/blob/master/Releases.md) has more information.';

local-cli/link/ios/getTargets.js

@@ -22,6 +22,6 @@ module.exports = function getTargets(project) {
       target: nativeTargetSection[key],
         name: nativeTargetSection[key].productReference_comment,
       isTVOS: (buildConfiguration.buildSettings.SDKROOT && (buildConfiguration.buildSettings.SDKROOT.indexOf('appletv') !== -1)) || false
-    }
+    };
   });
 };

local-cli/link/ios/registerNativeModule.js

@@ -46,8 +46,8 @@ module.exports = function registerNativeModuleIOS(dependencyConfig, projectConfi
   getTargets(dependencyProject).forEach(product => {
     var i;
     if (!product.isTVOS) {
-      for (i=0; i<targets.length; i++) {
+      for (i = 0; i < targets.length; i++) {
-        if(!targets[i].isTVOS) {
+        if (!targets[i].isTVOS) {
           project.addStaticLibrary(product.name, {
             target: targets[i].uuid
           });
@@ -56,8 +56,8 @@ module.exports = function registerNativeModuleIOS(dependencyConfig, projectConfi
     }
 
     if (product.isTVOS) {
-      for (i=0; i<targets.length; i++) {
+      for (i = 0; i < targets.length; i++) {
-        if(targets[i].isTVOS) {
+        if (targets[i].isTVOS) {
           project.addStaticLibrary(product.name, {
             target: targets[i].uuid
           });