Remove obsolete info regarding php://stdin

Author: cmb69

language/wrappers/php.xml

@@ -25,8 +25,8 @@
     input or output stream of the PHP process.  The stream references a
     duplicate file descriptor, so if you open <filename>php://stdin</filename>
     and later close it, you close only your copy of the descriptor-the actual
-    stream referenced by <constant>STDIN</constant> is unaffected.  Note that
-    PHP exhibited buggy behavior in this regard until PHP 5.2.1.  It is
+    stream referenced by <constant>STDIN</constant> is unaffected.
+    It is
     recommended that you simply use the constants <constant>STDIN</constant>,
     <constant>STDOUT</constant> and <constant>STDERR</constant> instead of
     manually opening streams using these wrappers.