Remove custom verbatim margin logic

IPython/nbconvert/templates/latex/latex_base.tplx

@@ -76,10 +76,6 b' This template does not define a docclass, the inheriting class must define this.'
     % Slightly bigger margins than the latex defaults
     \geometry{verbose,tmargin=3cm,bmargin=3cm,lmargin=2.5cm,rmargin=2.5cm}
 
-    % Hardcode size of all verbatim environments to be a bit smaller
-    \makeatletter 
-    \g@addto@macro\@verbatim\small\topsep=0.5em\partopsep=0pt
-    \makeatother 
 ((* endblock commands *))
 
 ((* block predoc *))