test(nest-module): remove tests

nest-module/test/test_get_gids.py

nest-module/test/test_get_multimeters.py

nest-module/test/test_get_neuron_properties.py

nest-module/test/test_get_populations.py

nest-module/test/test_get_simulation_time_info.py

nest-module/test/test_get_spikedetectors.py

nest-module/test/test_kernel_status.py