\newboolean{imta@boolean@withTodo}
\setboolean{imta@boolean@withTodo}{true}
\newcommand*{\withoutTodo}{\setboolean{imta@boolean@withTodo}{false}}

\newcommand{\todo}[1]{
  \ifthenelse{\boolean{imta@boolean@withTodo}}{%
    \textcolor{red}{\textbf{[TODO: #1]}}
  }{}
}
