[Style] Add remove whitespace macro

docs/parts/reference/style/intro.tex

@@ -12,4 +12,5 @@ General styling commands. All other commands, except these ones require at least
     \item \verb|\smallhspace| Prints a 2mm hspace
     \item \verb|\mediumhspace| Prints a 5mm hspace
     \item \verb|\largehspace| Prints a 10mm = 1cm hspace
+    \item \verb|\rmvspace| Removes some of the vertical whitespace printed by environments like \verb|align|
 \end{itemize}

main/style/style.tex

@@ -56,6 +56,7 @@
         }
     }
 }
+\newcommand{\rmvspace}{\vspace{-0.5pc}}
 \renewcommand{\footrulewidth}{0.4pt}
 \newcommand{\TODO}{\color{red} \hl{TODO:} \color{black}}
 \newcommand{\bi}[1]{\textbf{\textit{#1}}}