It's needed to prevent usages of them as real annotation/type.
But we can't remove them, because currently some modifiers
are artificially resolved as annotations of those classes.
- move some of boxWithStdlib tests under fullJdk/ directory, where they will be
compiled against the full JDK
- introduce FULL_JDK in-text directive for the reflection test as only 4 tests
out of 654 needed the full JDK