Remove ProjectionTy::from_ref_and_name

Author: matthewjasper

core/src/ops/deref.rs

@@ -64,6 +64,7 @@ pub trait Deref {
     /// The resulting type after dereferencing.
     #[stable(feature = "rust1", since = "1.0.0")]
     #[rustc_diagnostic_item = "deref_target"]
+    #[cfg_attr(not(bootstrap), lang = "deref_target")]
     type Target: ?Sized;
 
     /// Dereferences the value.