\documentclass{book}

\usepackage{titletoc}

\makeatletter
\renewcommand{\@seccntformat}[1]{}                    

% Numbered chapters with mini tableofcontents
\def\@makechapterhead#1{
    \startcontents
    {\flushleft \printcontents{l}{1}{}}
}

\begin{document}

\chapter{title}

\include{extra}

\end{document}
