Add support for g++-9 compiler

Summary: related to #7, T13767

Reviewers: ivica

Reviewed By: ivica

Subscribers: miljen, iljazovic

Differential Revision: https://repo.mireo.local/D29302

test/include/test_common/delayed_op.hpp

@@ -40,7 +40,7 @@ public:
 		_args(std::move(args)...)
 	{}
 
-	delayed_op(delayed_op&&) noexcept = default;
+	delayed_op(delayed_op&&) = default;
 	delayed_op(const delayed_op&) = delete;
 
 	using executor_type = asio::steady_timer::executor_type;

test/include/test_common/test_stream.hpp

@@ -118,7 +118,7 @@ public:
 			});
 	}
 
-	read_op(read_op&&) noexcept = default;
+	read_op(read_op&&) = default;
 	read_op(const read_op&) = delete;
 
 	using executor_type = test_stream_impl::executor_type;
@@ -173,7 +173,7 @@ public:
 		_handler(std::move(handler))
 	{}
 
-	write_op(write_op&&) noexcept = default;
+	write_op(write_op&&) = default;
 	write_op(const write_op&) = delete;
 
 	using executor_type = test_stream_impl::executor_type;