Delete stray \indexlibrarymember.

zygoloid · zygoloid · commit c6a61886a524 · 2018-03-28T18:55:17.000-07:00
diff --git a/source/utilities.tex b/source/utilities.tex
@@ -27973,7 +27973,6 @@
 \returns \tcode{os.str()}.
 \end{itemdescr}
 
-\indexlibrarymember{}{}%
 \begin{itemdecl}
 template<class charT, class traits, class Alloc, class Streamable>
   basic_string<charT, traits, Alloc>
