By default a code such as this in org-mode
[[foo.pdf]]
will produce the following code in the exported .tex document
\begin{center}
\includegraphics[width=.9\linewidth]{foo.pdf}
\end{center}
How can I stop org-mode's exporter from adding the \begin{center} \end{center} environment. I am using the memoir class and I'd rather use \centerfloat.