Drop useless apycot config file

I'm not sure this is still used but I'm sure we don't want to use it anymore :)

apycot.ini

-[MAIN]
-includes=%(public)s/cubicweb/misc/cubicweb-base_test.ini
-
-[cubicwebpack-person]
-dependencies=cubicweb
-groups=CUBES
-repository=hg:%(public)s/cubes/person/
-path=person