Trim unneeded TeX macros

sphinx/texinputs/sphinx.sty

@@ -708,11 +708,8 @@
 % #2 = for material below frame, such as a caption or "continues on next page"
 % #3 = actual contents, which will be typeset with a background color
 \long\def\spx@CustomFBox#1#2#3{%
-  \leavevmode
   \begingroup
   \setbox\@tempboxa\hbox{{#3}}% inner braces to avoid color leaks
-  \hbox
-   {\lower\dimexpr\fboxrule+\dp\@tempboxa\hbox{%
   \vbox{#1% above frame
             % draw frame border _latest_ to avoid pdf viewer issue
             \kern\fboxrule
@@ -728,8 +725,6 @@
             \hrule\@height\fboxrule
         #2% below frame
        }%
-    }%
-   }%
   \endgroup
 }%
 \def\spx@fcolorbox@put@c#1{% hide width from framed.sty measuring