Remove use of enumitem.sty to fix continuous integration builds

This leaves the 'description' lists with some poor formatting, which we should return to later.

preamble.tex

@@ -71,7 +71,7 @@
 \usepackage{longtable}
 \usepackage{multirow} % for multirow entries in tables
 \usepackage{listings}
-\usepackage{enumitem}
+%\usepackage{enumitem} % Package not available for continuous integration builds.
 \usepackage{color}
 \usepackage[table]{xcolor}
 %\def\doublelabel#1{\label{#1}\hypertarget{#1}{}}
@@ -302,12 +302,13 @@
 \def\subparagraphautorefname{section}
 
 % Make all description lists break the line after each key.
-\setlist[description]{
-  style=nextline,
-  labelwidth=0pt,
-  leftmargin=15pt,
-  itemindent=\dimexpr-5pt-\labelsep\relax,
-}
+% henrikt-ma: Commenting out use of the enumitem package, see above.
+%\setlist[description]{
+%  style=nextline,
+%  labelwidth=0pt,
+%  leftmargin=15pt,
+%  itemindent=\dimexpr-5pt-\labelsep\relax,
+%}
 
 \title{
 \ifpdf