Remove the drop_in_place hack in cross_crate_inlinable

Author: saethlin

compiler/rustc_mir_transform/src/cross_crate_inline.rs

@@ -75,11 +75,13 @@ fn cross_crate_inlinable(tcx: TyCtxt<'_>, def_id: LocalDefId) -> bool {
         return false;
     }
 
+    /*
     if let Some(drop_in_place) = tcx.lang_items().drop_in_place_fn() {
         if rustc_hir::def_id::DefId::from(def_id) == drop_in_place {
             return true;
         }
     }
+    */
 
     if !tcx.is_mir_available(def_id) {
         return false;