public boolean doRemove(Integer groupid) throws Exception {
		boolean flag = false ;
		String sql = "DELETE FROM admingroup_privilege WHERE groupid=?";
		this.pstmt = this.conn.prepareStatement(sql);
		this.pstmt.setInt(1, groupid) ;
		if (this.pstmt.executeUpdate() > 0) {
			flag = true ;
		}
		return flag;
	}