[RFA] testsuite/gdb.mi useless commands

[Denis PILAT]

Denis PILAT wrote:
> This patch removes the commands mi_gdb_reinitialize_dir, mi_gdb_load 
> and mi_delete_breakpoints that has been moved into the *proc 
> mi_run_to_main* of lib/mi-support.exp.
>
> It quicks up the testsuite execution time, not a lot for native targets,
> but this has a real impact when your targets take a while to load 
> binary files.
> No regression in the testsuite for i686-pc-linux-gnu gdb.
>
> Ok for commit?
>
>
Just want to precise that I did not change at all mi_run_to_main 
procedure, I just removed some calls from testsuite that were done twice.

-- 
Denis