8293028: Remove GenCollectedHeap::handle_failed_promotion

Reviewed-by: kbarrett

src/hotspot/share/gc/shared/genCollectedHeap.hpp

@@ -384,15 +384,6 @@ public:
     _incremental_collection_failed = false;
   }
 
-  // Promotion of obj into gen failed.  Try to promote obj to higher
-  // gens in ascending order; return the new location of obj if successful.
-  // Otherwise, try expand-and-allocate for obj in both the young and old
-  // generation; return the new location of obj if successful.  Otherwise, return NULL.
-  oop handle_failed_promotion(Generation* old_gen,
-                              oop obj,
-                              size_t obj_size);
-
-
 private:
   // Return true if an allocation should be attempted in the older generation
   // if it fails in the younger generation.  Return false, otherwise.