Replace NullOp::SizeOf and NullOp::AlignOf by lang items.

Author: cjgillot

clippy_utils/src/qualify_min_const_fn.rs

@@ -194,10 +194,7 @@ fn check_rvalue<'tcx>(
                 ))
             }
         },
-        Rvalue::NullaryOp(
-            NullOp::SizeOf | NullOp::AlignOf | NullOp::OffsetOf(_) | NullOp::UbChecks | NullOp::ContractChecks,
-            _,
-        )
+        Rvalue::NullaryOp(NullOp::OffsetOf(_) | NullOp::UbChecks | NullOp::ContractChecks, _)
         | Rvalue::ShallowInitBox(_, _) => Ok(()),
         Rvalue::UnaryOp(_, operand) => {
             let ty = operand.ty(body, cx.tcx);