Remove redirection of _IO_vfprintf

Since the commit

commit 698fb75b9f
Author: Zack Weinberg <zackw@panix.com>
Date:   Wed Mar 7 14:32:01 2018 -0500

    Add __v*printf_internal with flags arguments

_IO_vfprintf is gone.  This did not trigger any test case failures on
powerpc and powerpc64le, because there were no tests that covered it.
However, new test cases for nldbl versions of argp.h functions exposed
the problem.

Tested for powerpc64 and powerpc64le.

ChangeLog

@@ -1,3 +1,7 @@
+2018-12-11  Gabriel F. T. Gomes  <gabriel@inconstante.eti.br>
+
+	* libio/libio.h: Remove redirection for _IO_vfprintf.
+
 2018-12-11  Andreas Schwab  <schwab@suse.de>
 
 	* Makerules: Remove all references to abilist-pattern.

libio/libio.h

@@ -300,7 +300,6 @@ extern void _IO_free_wbackup_area (FILE *) __THROW;
 
 #ifdef __LDBL_COMPAT
 __LDBL_REDIR_DECL (_IO_vfscanf)
-__LDBL_REDIR_DECL (_IO_vfprintf)
 #endif
 
 libc_hidden_proto (__overflow)