Remove Boost.StaticAssert

include/boost/unordered/detail/static_assert.hpp

@@ -0,0 +1,12 @@
+#ifndef BOOST_UNORDERED_DETAIL_STATIC_ASSERT_HPP
+#define BOOST_UNORDERED_DETAIL_STATIC_ASSERT_HPP
+
+#include <boost/config.hpp>
+#if defined(BOOST_HAS_PRAGMA_ONCE)
+#pragma once
+#endif
+
+#define BOOST_UNORDERED_STATIC_ASSERT(...)                                     \
+  static_assert(__VA_ARGS__, #__VA_ARGS__)
+
+#endif // BOOST_UNORDERED_DETAIL_STATIC_ASSERT_HPP