删除图形周围的框

Question

我需要在文档中包含图形，为此我使用以下代码

\begin{figure}[h]  
    \centering  
    \includegraphics{QApic}  
    \caption{Figure One}  
    \label{QApic}  
\end{figure}

图形周围有一个黑框。我该如何修改，让图形周围没有框？

以下是整个结构

\documentclass[runningheads]{llncs} %runningheads adds headers with page numbers
\usepackage{graphicx}
\graphicspath{ {images/} }
\usepackage{float}
\floatstyle{boxed}
\restylefloat{figure}
\usepackage{listings}
\usepackage{amsmath}
\usepackage{url}
\usepackage{color}
\usepackage{lipsum}
\renewcommand{\sectionmark}[1]{\markright{#1}}

\lstdefinestyle{myjava}{language=Java}
\lstset{style=myjava}

\title{Evaluation of xyz}
\begin{document}

\begin{abstract}
\end{abstract}

%\tableofcontents

\tableofcontents
\newpage

\section{Introduction}

\begin{figure}[h]  
    \centering  
    \includegraphics{QApic}  
    \caption{Figure One}  
    \label{QApic}  
\end{figure}

\section{Experiment}

\section{conclusion}

\end{document}