Additionally removed the `arrow-function` feature for
test/language/eval-code/direct/new.target-fn.js as it is not testing
arrow-functions, but they are mentioned in the preamble.

* Add missing test for early error

* Add missing test for WithBaseObject

* Improve coverage for `new.target`

* Add test for deletion of SuperReference

* Add tests for `in` keyword restrictions

* fixup! Improve coverage for `new.target`