[Tex/LaTex] pgfplots: How to remove all axis lines of polaraxis

Question

I need to draw a polar coordinate system without border lines.
Adding axis lines=none (without star) to pgfplot's polaraxis argument list blanks out the coordinate system completely (including grid lines, tick lines, etc).
Adding axis lines*=none (with star) as in the following MWE removes the black axis line at the inner edge and the left edge of the sector. That's already half the job — how can I remove the outer edge and the right edge? (cf. screenshot below)

\documentclass{article}
\usepackage{tikz}
\usepackage{pgfplots}
\usetikzlibrary{pgfplots.polar}
\pgfplotsset{compat=newest}
\begin{document}
    \begin{tikzpicture} 
        \begin{polaraxis}[%
                        xmin=-5,%
                        xmax=95,%
                        ymin=10,%
                        ymax=30,%
                        axis lines*=none,%
                        ]
        \end{polaraxis}
    \end{tikzpicture}
\end{document}

Answer 1

Add axis line style = {draw=white,line width=0.0001pt}, to the options (bit of a hack though). You can even omit draw=white and simply put axis line style = {line width=0.0001pt},. Line is there but invisible.

\documentclass{article}
\usepackage{tikz}
\usepackage{pgfplots}
\usetikzlibrary{pgfplots.polar}
\pgfplotsset{compat=newest}
\begin{document}
    \begin{tikzpicture}
        \begin{polaraxis}[%
                        xmin=-5,%
                        xmax=95,%
                        ymin=10,%
                        ymax=30,%
                        axis lines*=none,%
                        axis line style = {draw=white,line width=0.0001pt},
                        ]
        \end{polaraxis}
    \end{tikzpicture}
\end{document}