Removed 'secure_vector'

Close ethereum#780

libdevcore/Common.h

@@ -87,47 +87,6 @@ using bytes = std::vector<byte>;
 using bytesRef = vector_ref<byte>;
 using bytesConstRef = vector_ref<byte const>;
 
-template <class T>
-class secure_vector
-{
-public:
-	secure_vector() {}
-	secure_vector(secure_vector<T> const& /*_c*/) = default;  // See https://github.com/ethereum/libweb3core/pull/44
-	explicit secure_vector(unsigned _size): m_data(_size) {}
-	explicit secure_vector(unsigned _size, T _item): m_data(_size, _item) {}
-	explicit secure_vector(std::vector<T> const& _c): m_data(_c) {}
-	explicit secure_vector(vector_ref<T> _c): m_data(_c.data(), _c.data() + _c.size()) {}
-	explicit secure_vector(vector_ref<const T> _c): m_data(_c.data(), _c.data() + _c.size()) {}
-	~secure_vector() { ref().cleanse(); }
-
-	secure_vector<T>& operator=(secure_vector<T> const& _c)
-	{
-		if (&_c == this)
-			return *this;
-
-		ref().cleanse();
-		m_data = _c.m_data;
-		return *this;
-	}
-	std::vector<T>& writable() { clear(); return m_data; }
-	std::vector<T> const& makeInsecure() const { return m_data; }
-
-	void clear() { ref().cleanse(); }
-
-	vector_ref<T> ref() { return vector_ref<T>(&m_data); }
-	vector_ref<T const> ref() const { return vector_ref<T const>(&m_data); }
-
-	size_t size() const { return m_data.size(); }
-	bool empty() const { return m_data.empty(); }
-
-	void swap(secure_vector<T>& io_other) { m_data.swap(io_other.m_data); }
-
-private:
-	std::vector<T> m_data;
-};
-
-using bytesSec = secure_vector<byte>;
-
 // Numeric types.
 using bigint = boost::multiprecision::number<boost::multiprecision::cpp_int_backend<>>;
 using u64 =  boost::multiprecision::number<boost::multiprecision::cpp_int_backend<64, 64, boost::multiprecision::unsigned_magnitude, boost::multiprecision::unchecked, void>>;