Remove simple_ipdb example as redundant

Signed-off-by: Brenden Blanco <bblanco@plumgrid.com>

examples/simple_ipdb.py

-#!/usr/bin/env python
-# Copyright (c) PLUMgrid, Inc.
-# Licensed under the Apache License, Version 2.0 (the "License")
-
-# This example shows how to use pyroute2 to attach a BPF program to an
-# interface. Pyroute2 does contain some quirks with regard to program
-# termination, especially take care when using IPDB and leaving exceptions
-# uncaught (catch them).
-
-from bpf import BPF
-from pyroute2 import IPRoute, IPDB
-
-ipr = IPRoute()
-ipdb = IPDB(nl=ipr)
-
-text = """
-int hello(struct __sk_buff *skb) {
-  return 1;
-}
-"""
-
-try:
-    b = BPF(text=text, debug=0)
-    fn = b.load_func("hello", BPF.SCHED_CLS)
-    ifc = ipdb.create(ifname="t1a", kind="veth", peer="t1b").commit()
-
-    ipr.tc("add", "ingress", ifc["index"], "ffff:")
-    ipr.tc("add-filter", "bpf", ifc["index"], ":1", fd=fn.fd,
-           name=fn.name, parent="ffff:", action="ok", classid=1)
-    ipr.tc("add", "sfq", ifc["index"], "1:")
-    ipr.tc("add-filter", "bpf", ifc["index"], ":1", fd=fn.fd,
-           name=fn.name, parent="1:", action="ok", classid=1)
-finally:
-    if "ifc" in locals(): ifc.remove().commit()
-    ipdb.release()