Revert "DWARF and unwind support for AOT assembly output."

runtime/vm/hash_map.h

Index: runtime/vm/hash_map.h
diff --git a/runtime/vm/hash_map.h b/runtime/vm/hash_map.h
index 3bb99649bf0240f62da05fe71193650fc6115c76..ff473013f4d643cd115d200dcf0a25fb716b1ce1 100644
--- a/runtime/vm/hash_map.h
+++ b/runtime/vm/hash_map.h
@@ -39,9 +39,6 @@ class BaseDirectChainedHashMap : public B {
       typename KeyValueTrait::Key key) const;
 
   typename KeyValueTrait::Pair* Lookup(typename KeyValueTrait::Key key) const;
-  bool HasKey(typename KeyValueTrait::Key key) const {
-    return Lookup(key) != NULL;
-  }
 
   bool IsEmpty() const { return count_ == 0; }
 
@@ -381,10 +378,6 @@ class DirectChainedHashMap
   DirectChainedHashMap()
       : BaseDirectChainedHashMap<KeyValueTrait, ValueObject>(
             ASSERT_NOTNULL(Thread::Current()->zone())) {}
-
-  explicit DirectChainedHashMap(Zone* zone)
-      : BaseDirectChainedHashMap<KeyValueTrait, ValueObject>(
-            ASSERT_NOTNULL(zone)) {}
 };