Do not rely on pdftex anymore

shortcuts.tex

@@ -3,13 +3,6 @@
 
 \RequirePackage[2020-02-02]{latexrelease}
 \documentclass[french]{article}
-\usepackage{iftex}
-\ifPDFTeX
-\usepackage[T1]{fontenc}
-\usepackage[utf8]{inputenc}
-\usepackage{libertine}
-\usepackage{keystroke}
-\else
 \usepackage{fontspec}
 \usepackage{libertine}
 \setmonofont{Latin Modern Mono}
@@ -29,7 +22,7 @@
 \newcommand{\PgUp}{\LKeyScreenUp}
 \newcommand{\Tab}{\LKeyTab}
 \newcommand{\Esc}{\LKeyEsc}
-\fi
+%
 \usepackage{booktabs}
 \usepackage[a4paper]{geometry}
 \usepackage{longtable}