[iostream.objects.overview] Delete duplicate paragraph.

Initially, 75bea3c moved a footnote
into a new "recommended practice" paragraph. Later,
cb07613 added the same "recommended
practice" into the middle of the paragraph that originally contained
the footnote.

Author: tkoeppe

source/iostreams.tex

@@ -431,11 +431,6 @@
 time prior to or during the first time an object of class
 \tcode{ios_base::Init} is constructed, and in any case before the body
 of \tcode{main}\iref{basic.start.main} begins execution.
-
-\recommended
-If it is possible for them to do so, implementations should
-initialize the objects earlier than required.
-
 The objects are not destroyed during program execution.\footnote{Constructors and destructors for objects with
 static storage duration can
 access these objects to read input from