\documentclass[showdate=true]{beamer}

\usetheme{Antibes}

%\setbeameroption{show notes}
\setbeameroption{hide notes}
%\setbeameroption{show only notes}

%%%%% Remove Subsection bar from header
\makeatletter
\setbeamertemplate{headline}
{%
    \begin{beamercolorbox}[wd=\paperwidth,colsep=1.5pt]{upper separation line head}
    \end{beamercolorbox}
    \begin{beamercolorbox}[wd=\paperwidth,ht=2.5ex,dp=1.125ex,%
      leftskip=.3cm,rightskip=.3cm plus1fil]{title in head/foot}
      \usebeamerfont{title in head/foot}\insertshorttitle
    \end{beamercolorbox}
    \begin{beamercolorbox}[wd=\paperwidth,ht=2.5ex,dp=1.125ex,%
      leftskip=.3cm,rightskip=.3cm plus1fil]{section in head/foot}
      \usebeamerfont{section in head/foot}%
      \ifbeamer@tree@showhooks
        \setbox\beamer@tempbox=\hbox{\insertsectionhead}%
        \ifdim\wd\beamer@tempbox>1pt%
          \hskip2pt\raise1.9pt\hbox{\vrule width0.4pt height1.875ex\vrule width 5pt height0.4pt}%
          \hskip1pt%
        \fi%
      \else%
        \hskip6pt%
      \fi%
      \insertsectionhead
    \end{beamercolorbox}
% Code for subsections removed here
}
\makeatother

\usepackage{amsmath}

%%%%% Add Frame Number
\addtobeamertemplate{navigation symbols}{}{%
    \usebeamerfont{footline}%
    \usebeamercolor[fg]{footline}%
    \hspace{1em}%
    \insertframenumber
}
\title{ KM3Net }

\date{April 21st, 2020}
\author{E.T. de Boone}


\begin{document}

\frame{\titlepage}

\begin{frame}
	\frametitle{Outline}
	\tableofcontents
\end{frame}

%%%%%%%%%%%%%%%%%%
%% General Info %%
%%%%%%%%%%%%%%%%%%
\section{General Info}



%%%%%%%%%%%%%%%%%%
%%  Technology  %%
%%%%%%%%%%%%%%%%%%
\section{Detector Design and Technology}
\subsection{Detection Unit}
\subsection{Digitial Optical Modules}
\subsection{Calibration}
\subsection{Differences between ARCA and ORCA}


%%%%%%%%%%%%%%%%%%
%%   Physics    %%
%%%%%%%%%%%%%%%%%%
\section{Physics}

\subsection{Astroparticle Physics}

\subsection{Particle Physics}




\end{document}