openflow app: Remove unused code and fix spelling errors
openflow app: Remove unused code and fix spelling errors

Change-Id: I677c447fb805e6e697066e771652cfe001c34082
Signed-off-by: Saggi Mizrahi <90260a7db2670c69b7c0e4a224a404ebffebdad5@huawei.com>

FrankDuan/df_code,neoareslinux/dragonflow,no2key/dragonflow,no2key/dragonflow,openstack/dragonflow,neoareslinux/dragonflow,FrankDuan/df_code,openstack/dragonflow,FrankDuan/df_code,openstack/dragonflow