clean test classes

intelligine/tests/simulation/mode/TestChangeMode.py

-from os import getcwd
-from sys import path as ppath
-
-ppath.insert(1,getcwd()+'/modules')
-
-
 from intelligine.synergy.object.Food import Food
 from intelligine.tests.simulation.mode.Base import Base
 from intelligine.synergy.Colony import Colony

intelligine/tests/simulation/molecule/TestDirection.py

-from os import getcwd
-from sys import path as ppath
 from intelligine.core.exceptions import NoMolecule
 from intelligine.simulation.molecule.Molecule import Molecule
 from intelligine.simulation.molecule.MoleculeFlavour import MoleculeFlavour
-
-ppath.insert(1,getcwd()+'/modules')
-
 from intelligine.tests.simulation.molecule.Base import Base
 from intelligine.simulation.molecule.DirectionMolecule import DirectionMolecule
 from intelligine.core.Context import Context