swift234

when emitting an "overriding declaration requires an 'override' attribute"
diagnostic, don't emit a fixit if the decl we're complaining about is a vardecl.
We don't have enough location information to point to the 'var' token specifically,
and it is not safe/correct to insert @override after the var token but before the name.

This just removes the misleading fixit, a better fix would be to have the location
info and emit it in the right place, which is the subject of rdar://16320042.


Swift SVN r15056