deletes the data that lets our program know if it is
        running as singleton when calling check_if_open,
        i.e check_if_open will return fals after calling this

def release_singleton(self):
        '''deletes the data that lets our program know if it is
        running as singleton when calling check_if_open,
        i.e check_if_open will return fals after calling this
       '''
        with suppress(KeyError):
            del self.cfg['is_programming_running_info']
        with suppress(FileNotFoundError, AttributeError):
            os.remove(self.check_file)