[OB] eliminate unused local

[Michael Snyder]

Pedro Alves wrote:
> On Wednesday 05 May 2010 19:55:36, Michael Snyder wrote:
>> 2010-05-05  Michael Snyder  <msnyder@vmware.com>
>>
>>         * features/i386/i386-mmx.c (initialize_tdesc_i386_mmx):
>>         Delete unused variable 'type'.
> 
> The patch also deleted `field_type'.  But in any case, this
> is a generated file; you should fix the source of the problem
> instead.

Oops, where is it generated from?