This removes the support running macros in the CFE.
The scanner and package:kernel still have support for the macro modifier. This will be removed in a follow-up.
The metadata expression parser is deliberately left in, since it might serve as the basis for a parser AST.
Change-Id: I06d91eb0fac2e7a71e6afde647b03be3814dbd5f
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/406963
Commit-Queue: Johnni Winther <johnniwinther@google.com>
Reviewed-by: Morgan :) <davidmorgan@google.com>
Johnni Winther
c27cec63aa