remove some dead code

parallel_hashmap/phmap.h

@@ -3221,14 +3221,6 @@ private:
         }
     }
 
-    void rehash_and_grow_if_necessary() {
-        for (auto& inner : sets_)
-        {
-            MutexLock_ m(&inner);
-            inner.set_.rehash_and_grow_if_necessary();
-        }
-    }
-
     bool has_element(const value_type& elem) const {
         size_t hash  = PolicyTraits::apply(HashElement{hash_ref()}, elem);
         Inner& inner = sets_[subidx(hash)];
@@ -4059,7 +4051,6 @@ struct HashEq<T*>
         template <class U>
         size_t operator()(const U& ptr) const {
             return phmap::Hash<const T*>{}(HashEq::ToPtr(ptr));
-            //return std::hash<const T*>{}(HashEq::ToPtr(ptr));
         }
     };
 

parallel_hashmap/phmap_base.h

@@ -460,8 +460,7 @@ namespace type_traits_internal {
     struct IsHashable : std::false_type {};
 
     template <typename Key>
-    struct IsHashable<
-        Key,
+    struct IsHashable<Key,
         phmap::enable_if_t<std::is_convertible<
             decltype(std::declval<std::hash<Key>&>()(std::declval<Key const&>())),
             std::size_t>::value>> : std::true_type {};