Rimosso loading inutile di caption.

src/preamble/packages/subcaption.tex

-\usepackage{caption}
+\usepackage[font=small]{subcaption}
 \DeclareCaptionLabelSeparator{septoptesi}{.\quad}
 \captionsetup{labelsep=septoptesi, figureposition=bottom, font=small}
 \captionsetup[table]{position=above}
-\usepackage[font=small]{subcaption}
 \renewcommand\thesubfigure{(\alph{subfigure})}
-\captionsetup[subfigure]{labelformat=simple}
\ No newline at end of file
+\captionsetup[subfigure]{labelformat=simple}