Fix Circuit Plotting for non-reversed states

[christian512]

The plotting of circuits had an error for setting reversed=False. This was already discussed in a PR for the QuTiP repository.
See: qutip/qutip#1847

[BoxiLi]

Thank you very much @christian512 ! There is a small deviation here. In qutip-qip, qc.latex_code() gives the full executable LaTeX code rather than just the circuit part. The intention is to make the output directly usable. So one gets here

\documentclass{standalone}
\usepackage[braket]{qcircuit}
\renewcommand{\qswap}{*=<0em>{\times}}
\begin{document}
\Qcircuit @C=1cm @R=1cm {
&  &  \meter & \qw \\ 
&  &  \qw \cwx[-1]  & \qw \\ 
}
\end{document}

[christian512]

@BoxiLi , thanks for the comment :) I will change the two tests for this function.

[BoxiLi]

Tests pass! Many thanks @christian512 !