Remove patch file which was used in centralized DF
Remove patch file which was used in centralized DF

Change-Id: Ifa6956966ffd3e3532d3ceaafb824b56fa7fbaec

FrankDuan/df_code,FrankDuan/df_code,openstack/dragonflow,FrankDuan/df_code,openstack/dragonflow,openstack/dragonflow