Remove unused variables

[Ulrich Drepper]

Andreas Jaeger <aj@suse.de> writes:

> I get:
> ../sysdeps/ieee754/dbl-64/e_sqrt.c:55: warning: unused variable `b'
> ../sysdeps/ieee754/dbl-64/e_sqrt.c:56: warning: unused variable `n'
> 
> Ok to commit?

Yes.

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