revert white on black PDF title page

doc/utils/sphinx-config/conf.py.in

@@ -299,8 +299,6 @@ latex_elements = {
 
 # Additional stuff for the LaTeX preamble.
 'preamble': r'''
-\usepackage{afterpage}
-\usepackage{xcolor}
 \setcounter{tocdepth}{2}
 \renewcommand{\sfdefault}{ptm}  % Use Times New Roman font for \textrm
 \renewcommand{\sfdefault}{phv}  % Use Helvetica font for \textsf
@@ -347,12 +345,6 @@ latex_elements = {
 }
 \makeatother
 ''',
-'maketitle': r'''
-\pagecolor{black}
-\color{white}
-\afterpage{\nopagecolor\color{black}}
-\sphinxmaketitle
-''',
 }
 
 # copy custom style file for tweaking index layout