disable #[const_trait] on Destruct

We need to change how we handle it in the trait system before re-enabling it.

Author: fee1-dead

library/core/src/marker.rs

@@ -931,7 +931,7 @@ marker_impls! {
 #[lang = "destruct"]
 #[rustc_on_unimplemented(message = "can't drop `{Self}`", append_const_msg)]
 #[rustc_deny_explicit_impl(implement_via_object = false)]
-#[const_trait]
+// FIXME(effects) #[const_trait]
 pub trait Destruct {}
 
 /// A marker for tuple types.