remove more deprecated files

experiment/homogeneous.py

experiment/material_neukamm.py

experiment/material_orthotropic.py

experiment/parametrized_laminate.py

experiment/python_matrix_operations.py

materials/__pycache__/material.cpython-38.pyc

materials/__pycache__/material_neukamm.cpython-38.pyc

materials/__pycache__/material_test.cpython-38.pyc

...rials/__pycache__/python_matrix_operations.cpython-38.pyc

materials/__pycache__/two_phase_material.cpython-38.pyc

materials/__pycache__/two_phase_material_1.cpython-38.pyc

materials/__pycache__/two_phase_material_2.cpython-38.pyc

materials/__pycache__/two_phase_material_3.cpython-38.pyc

materials/homogeneous.py

materials/material_neukamm.py

materials/material_neukamm_old.py

materials/material_orthotropic.py

materials/material_test.py

materials/parametrized_laminate.py

materials/two_phase_material_1.py