removed redundant code

apps/LoopThroughWithOpenGLCompositing/runtime/RuntimeJson.cpp

@@ -661,3 +661,14 @@ std::string SerializeJson(const JsonValue& value, bool pretty)
 	SerializeJsonImpl(value, output, pretty, 0);
 	return output.str();
 }
+
+std::vector<double> JsonArrayToNumbers(const JsonValue& value)
+{
+	std::vector<double> numbers;
+	for (const JsonValue& item : value.asArray())
+	{
+		if (item.isNumber())
+			numbers.push_back(item.asNumber());
+	}
+	return numbers;
+}