[examples] Remove broken example with no clear purpose

This example didn't compile, had no actual code changes in the last ~6
years, had no documentation explaining it's purpose, and insufficient
code comments to provide a useful example.  Removing it in favour of
fewer, but clearer, examples, that are easier to keep maintained.
Merge pull request #258 from karlp/pulls/dead-examples-1

[examples] Remove broken example with no clear purpose
Removed obsolete file.

I wrote:
> Moved from last cc65 release (2.13.3) to recent cc65 snapshot (2.13.9).
> [...]
> Atari:
> - The builtin linker config allows to override the start addr so there no more need for a custom linker config.
> [...]
However I didn't actually remove the custom linker config not needed anymore.
Merge pull request #260 from oliverschmidt/master

Removed obsolete file.
Added platform 'Atari XL'.

Don't be afraid, I'm not trying to have more retro platforms than "real" platforms ;-)
The platform 'atarixl' will replace the platform 'atari'. However I need both for some
transition period.
Merge pull request #261 from oliverschmidt/master

Added platform 'Atari XL'.
Another small addition for platform 'Atari XL'.
Merge pull request #263 from oliverschmidt/master

Another small addition for 'Atari XL'.
Fixing minimal-net for Cygwin.
Merge pull request #265 from mkovatsc/cygwin-minimal-net

Fixing minimal-net for Cygwin.
Removed some more old RCS tags from the Contiki source tree.
Merge pull request #267 from oliverschmidt/master

Removed some more old RCS tags from the Contiki source tree.
cooja TimeLine: refactor zoom infrastructure

Refactor common code into private functions.  Abstract to support zoom
to level or exact value.

There should be no behavioral change as a result of this patch except:

 * zooms are consistently filtered to be in the valid range (those from
   configuration parameters formerly had been used directly);
 * the correct centerTime is used for zoomOutAction when
   mousePixelPositionX is positive

Supports pabigot/contikix#5

Signed-off-by: Peter A. Bigot <pab@pabigot.com>
cooja TimeLine: zoom keystroke failure

The + typed character can only be generated on English keyboards by
shift-equals, resulting in a failure to recognize ctrl-plus because of
the unexpected shift modifier.  Adapt by supporting English and Spanish
keyboards, as well as number pad keys.

Closes pabigot/contikix#2

Reference: http://forums.oracle.com/thread/1356291
Signed-off-by: Peter A. Bigot <pab@pabigot.com>
cooja TimeLine: support mouse wheel zoom

Add listener that zooms based on mouse wheel.  The zoom center is the
mouse position, which alleviates the pressure to touch pabigot/contikix#4.

Closes pabigot/contikix#5

Signed-off-by: Peter A. Bigot <pab@pabigot.com>
Merge pull request #271 from pabigot/push/cooja-zoom

Push/cooja zoom