tizen: Replace speedpython by python-accel

Tizen toolchain provide same functionality with python-accel's macro

Also Chan Lee from Tizen toolchain project reported:
{
Speedpython macro sometimes cause some build problem

Speedpython macro is parsed when spec parsing time
and it includes other macro in its own.
(I mean, %{build_hostarch} macro)

And when the OBS project config updates,
OBS sometimes cannot sync-up the changes perfectly.

It this case, build error occurs when we use speedpython macro.

It seems OBS limitation but,
we can avoid this problem by using other macro
which provides same functionality.
}

Change-Id: I265220b5e1f2dcb1956ef546a799a94eb460dd88
Signed-off-by: Philippe Coval <philippe.coval@osg.samsung.com>