[Ada] Clean up No_Run_Time tests in exp_ch4.adb

[Laurent GUERBY]

On Fri, 2008-03-28 at 08:44 +0100, Arnaud Charlet wrote:
> > I couldn't find a test for the No_Run_Time pragma so I
> > tried to make one but failed:
> 
> Well, the No_Run_Time pragma is obsolete at this stage, so it's nopt
> really interesting to test it.

Is there a replacement for it?

> Note that this kind of configuration is interesting for a bare board
> target, not for an OS targetted one, so would be mainly relevant for
> configs such as e.g. powerpc-elf.

It still might be interesting to write stuff for early Linux boot
for example or to avoid waste of space in some Linux gadgets (like my
Nokia N810).

So if there's a non obsolete way of doing this I'm interested!

Thanks in advance,

Laurent