Remove unused packages out of dependency

No need to put packages which is not directly used or already a part of
python standard library in the dependency list.

Change-Id: I1b1e81beaa5af30404e4f2862e5b2e7d51c5b9b1
Issue-ID: VNFSDK-61
Signed-off-by: Lianhao Lu <lianhao.lu@intel.com>
1 file changed