Remove unused mem_heap_allocator

The code became unused in commit 10590dd3.

storage/innobase/include/mem0mem.h

@@ -412,103 +412,4 @@ struct mem_block_info_t {
 							UNIV_MEM_ALIGNMENT)
 
 #include "mem0mem.ic"
-
-/** A C++ wrapper class to the mem_heap_t routines, so that it can be used
-as an STL allocator */
-template<typename T>
-class mem_heap_allocator
-{
-public:
-	typedef		T		value_type;
-	typedef		size_t		size_type;
-	typedef		ptrdiff_t	difference_type;
-	typedef		T*		pointer;
-	typedef		const T*	const_pointer;
-	typedef		T&		reference;
-	typedef		const T&	const_reference;
-
-	mem_heap_allocator(mem_heap_t* heap) : m_heap(heap) { }
-
-	mem_heap_allocator(const mem_heap_allocator& other)
-		:
-		m_heap(other.m_heap)
-	{
-		// Do nothing
-	}
-
-	template <typename U>
-	mem_heap_allocator (const mem_heap_allocator<U>& other)
-		:
-		m_heap(other.m_heap)
-	{
-		// Do nothing
-	}
-
-	~mem_heap_allocator() { m_heap = 0; }
-
-	size_type max_size() const
-	{
-		return(ULONG_MAX / sizeof(T));
-	}
-
-	/** This function returns a pointer to the first element of a newly
-	allocated array large enough to contain n objects of type T; only the
-	memory is allocated, and the objects are not constructed. Moreover,
-	an optional pointer argument (that points to an object already
-	allocated by mem_heap_allocator) can be used as a hint to the
-	implementation about where the new memory should be allocated in
-	order to improve locality. */
-	pointer	allocate(size_type n, const_pointer hint = 0)
-	{
-		return(reinterpret_cast<pointer>(
-			mem_heap_alloc(m_heap, n * sizeof(T))));
-	}
-
-	void deallocate(pointer p, size_type n) { }
-
-	pointer address (reference r) const { return(&r); }
-
-	const_pointer address (const_reference r) const { return(&r); }
-
-	void construct(pointer p, const_reference t)
-	{
-		new (reinterpret_cast<void*>(p)) T(t);
-	}
-
-	void destroy(pointer p)
-	{
-		(reinterpret_cast<T*>(p))->~T();
-	}
-
-	/** Allocators are required to supply the below template class member
-	which enables the possibility of obtaining a related allocator,
-	parametrized in terms of a different type. For example, given an
-	allocator type IntAllocator for objects of type int, a related
-	allocator type for objects of type long could be obtained using
-	IntAllocator::rebind<long>::other */
-	template <typename U>
-	struct rebind
-	{
-		typedef mem_heap_allocator<U> other;
-	};
-
-private:
-	mem_heap_t*	m_heap;
-	template <typename U> friend class mem_heap_allocator;
-};
-
-template <class T>
-bool operator== (const mem_heap_allocator<T>& left,
-		 const mem_heap_allocator<T>& right)
-{
-	return(left.heap == right.heap);
-}
-
-template <class T>
-bool operator!= (const mem_heap_allocator<T>& left,
-		 const mem_heap_allocator<T>& right)
-{
-	return(left.heap != right.heap);
-}
-
 #endif