Remove \resetparts

main.tex

@@ -84,10 +84,6 @@
     \vspace*{0.5cm}%
 }
 
-\newcommand*{\resetparts}{% End the parts in TOC to set chapters at the root level
-    \bookmarksetup{startatroot}%
-}
-
 % Add chapter label as prefix to all other sub-labels
 \NewCommandCopy{\oldlabel}{\label}
 \newcommand{\labelprefix}{main}