Patch (Java): Remove Dead xref Code in GCJ

[Ranjit Mathew <rmathew at gmail dot com>]

Hi,

  As noted here:

  http://gcc.gnu.org/ml/java/2005-03/msg00011.html
  http://gcc.gnu.org/ml/java-patches/2004-q4/msg00683.html

and elsewhere, the xref code in GCJ is not used at
all and unnecessarily adds cruft. The attached
patch proposes to remove this code. (Since xref.c
and xref.h are to be removed, I have ommitted them
from the diff.)

This was tested with a clean bootstrap on 
i686-pc-linux-gnu with the libjava testsuite
(and Jacks) and produced no regressions.

OK for mainline?

Thanks,
Ranjit.

-- 
Ranjit Mathew      Email: rmathew AT gmail DOT com

Bangalore, INDIA.    Web: http://ranjitmathew.hostingzero.com/

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