Deletes tags from a node group.

    @type group: str
    @param group: group to delete tags from
    @type tags: list of string
    @param tags: tags to delete
    @type dry_run: bool
    @param dry_run: whether to perform a dry run
    @rtype: string
    @return: job id

def DeleteGroupTags(r, group, tags, dry_run=False):
    """
    Deletes tags from a node group.

    @type group: str
    @param group: group to delete tags from
    @type tags: list of string
    @param tags: tags to delete
    @type dry_run: bool
    @param dry_run: whether to perform a dry run
    @rtype: string
    @return: job id
    """

    query = {
        "dry-run": dry_run,
        "tag": tags,
    }

    return r.request("delete", "/2/groups/%s/tags" % group, query=query)