Delete a value in the configuration

        Parameters
        ----------
        keys: list of str
            A list of keys to be deleted. %(get_value_note)s
        %(ModelOrganizer.info.common_params)s
        base: str
            A base string that shall be put in front of each key in `values` to
            avoid typing it all the time

def del_value(self, keys, complete=False, on_projects=False,
                  on_globals=False, projectname=None, base='', dtype=None,
                  **kwargs):
        """
        Delete a value in the configuration

        Parameters
        ----------
        keys: list of str
            A list of keys to be deleted. %(get_value_note)s
        %(ModelOrganizer.info.common_params)s
        base: str
            A base string that shall be put in front of each key in `values` to
            avoid typing it all the time
        """
        config = self.info(complete=complete, on_projects=on_projects,
                           on_globals=on_globals, projectname=projectname,
                           return_dict=True, insert_id=False, **kwargs)
        for key in keys:
            if base:
                key = base + key
            key, sub_config = utils.go_through_dict(key, config)
            del sub_config[key]