now passes test "W391 blank line at end of file"

The python style recommends to not have any blank line at the end of a
file.  Spotted using:

 pep8 -select=W391

Change-Id: Idd2cdbb44c5829b28a0b53f7a35521d6ec1ce91f
Merge "now passes test "W391 blank line at end of file""