Improve code legibility and remove second use of useAppContext

Author: jloleysens

x-pack/legacy/plugins/watcher/public/np_ready/application/boot.tsx

@@ -27,7 +27,7 @@ export const boot = (bootDeps: BootDeps) => {
 
   render(
     <I18nContext>
-      <App {...{ ...appDeps, legacy }} />
+      <App {...appDeps} legacy={legacy} />
     </I18nContext>,
     element
   );

x-pack/legacy/plugins/watcher/public/np_ready/application/sections/watch_list/components/watch_list.tsx

@@ -48,8 +48,6 @@ export const WatchList = () => {
   const {
     chrome,
     legacy: { MANAGEMENT_BREADCRUMB },
-  } = useAppContext();
-  const {
     links: { watcherGettingStartedUrl },
   } = useAppContext();
   const [selection, setSelection] = useState([]);