refactor: replace 'preact' with 'react' (#1048)

app/assets/javascripts/Utils/FormatLastSyncDate.ts

@@ -0,0 +1,5 @@
+import { dateToLocalizedString } from '@standardnotes/snjs/'
+
+export const formatLastSyncDate = (lastUpdatedDate: Date) => {
+  return dateToLocalizedString(lastUpdatedDate)
+}

app/assets/javascripts/Utils/PreactUtils.ts

@@ -1,10 +0,0 @@
-import { render } from 'preact'
-
-/**
- * Source: https://stackoverflow.com/questions/50946950/how-to-destroy-root-preact-node
- * For some reason importing `import { unmountComponentAtNode } from 'preact/compat'` inside of app/index.tsx
- * results in the app failing to compile.
- */
-export function unmountComponentAtRoot(root: HTMLElement) {
-  render(null, root)
-}