chore(sdk): Remove invalid comment
I have tried for hours and have concluded it is probably not possible
even with GATs to have RawEvent borrow its inner value.
It is also not a commonly-used feature, so removing the unnecessary
clones is not that important.
@@ -58,8 +58,6 @@ impl EventHandlerContext for room::Room {
///
/// Used as a context argument for event handlers (see
/// [`Client::add_event_handler`]).
-// FIXME: This could be made to not own the raw JSON value with some changes to
-// the traits above, but only with GATs.
#[derive(Clone, Debug)]
pub struct RawEvent(Box<RawJsonValue>);
