\newlength{\abc}
\settowidth{\abc}{\space}
\AtBeginDocument{%
-\addto\extrasspanish{
\renewcommand{\equationautorefname}{\hspace{-\abc}}
\renewcommand{\sectionautorefname}{sec.\negthinspace}
\renewcommand{\subsectionautorefname}{sec.\negthinspace}
- \renewcommand{\subsubsectionautorefname}{sec.\negthinspace}}
+ \renewcommand{\subsubsectionautorefname}{sec.\negthinspace}
}
% don't load packages twice