eslint: remove react/prop-types from the warning set;

With TypeScript definitions for properties and state, the prop-types are
much less useful. Considering that they should disappear in the long
tail (once all the code has been migrated over to TypeScript), we can
already disable the warning rule that spams the CI console. This removes
around 331 warnings.
1 job for remove-eslint-prop-types in 5 minutes and 57 seconds (queued for 1 second)
Status Name Job ID Coverage
  Test
passed ci #1234315

00:05:57