Revert "Support the bibentry package (fixes #40)"

This reverts commit 6f7c166.

achemso.dtx

@@ -1124,18 +1124,6 @@
 %\end{macro}
 %\end{macro}
 %
-% Ensure \pkg{bibentry} works
-%    \begin{macrocode}
-\AtBeginDocument{
-  \@ifpackageloaded{bibentry}
-    {%
-      \patchcmd{\BR@nobib}{thebibliography}{mcitethebibliography}
-        {}{}%
-    }
-    {}%
-}
-%    \end{macrocode}
-%
 %\begin{macro}{\acs@bib@file}
 %\begin{macro}{\acs@bib@message}
 %\begin{macro}{\acs@bib@name}
@@ -1251,7 +1239,6 @@
 \RequirePackage[margin=2.54cm]{geometry}
 \RequirePackage{
   caption,
-  etoolbox,
   float,
   graphicx,
   setspace,
@@ -4950,9 +4937,7 @@ FUNCTION { end.bibitem } {
   if$
   write$
   newline$
-  "\EndOfBibitem{}" write$
-  newline$
-  newline$
+  "\EndOfBibitem" write$
 }
 
 % Formatting names: authors and editors are not quite the same,