Remove m68k-elf special cases from gdb.trace

[Eli Zaretskii]

> From: Pedro Alves <pedro@codesourcery.com>
> Date: Tue, 10 Nov 2009 19:37:27 +0000
> Cc: gdb-patches@sourceware.org,  Michael Snyder <msnyder@vmware.com>
> 
> On Tuesday 10 November 2009 18:15:26, Stan Shebs wrote:
> > Pedro Alves wrote:
> 
> > > gdb/agentexpr.texi has section "Tracing on Symmetrix" that I
> > > think should be dropped as well.
> > >   
> > Agreed. It's an interesting historical tidbit, but historians can go dig 
> > up an old rev if they really want to research it.
> 
> Should be obvious, but... Okay?

Yes.