[patch] cfgloopmanip.c: Remove split_loop_bb.

[Zdenek Dvorak]

Hello,

> > Attached is a patch to remove split_loop_bb as it is unused.
> > 
> > A quick check reveals that neither 4.0 or 4.1 branch uses this
> > function.  Last time I posted the same patch, Daniel Berlin pointed
> > out that the LNO branch still used the function
> > 
> >   http://gcc.gnu.org/ml/gcc-patches/2004-10/msg00594.html
> > 
> > but I don't see any activity on the LNO branch these days.
> > 
> This is true.
> Zdenek should know whether he has plans to use it or not.

I think it is OK to remove it (it is not used on killloop branch,
and I no longer remember what I wanted to use it for).

Zdenek