remove fatigue examples

rules/fatigue.tex

 \begin{itemize}
   \item
   Every strenuous activity inflicts one \gls{fatigue}.
-  \begin{itemize}
-    \item
-    Climbing
-    \item
-    Combat
-    \item
-    Swimming
-  \end{itemize}
   \item
   Every \gls{fatigue} a character has above their current \glspl{hp} inflicts a -1 penalty to all actions.
 \end{itemize}