Remove csv after process job is finished.

Fixed new tests.

tests/app/conftest.py

@@ -345,6 +345,11 @@ def mock_encryption(mocker):
     return mocker.patch('app.encryption.encrypt', return_value="something_encrypted")
 
 
+@pytest.fixture(scope='function')
+def mock_celery_remove_job(mocker):
+    return mocker.patch('app.celery.tasks.remove_job.apply_async')
+
+
 @pytest.fixture(scope='function')
 def sample_invited_user(notify_db,
                         notify_db_session,