Since iter(dict) is equivalent to iter(dict.keys()), it is unnecessary
to call the keys() method of a dict, the dictionary itself is enough
to be referenced. The shorter form is also considered to be more
Pythonic.
This patch removes the unnecessary dict.keys() method calls in api.
This is a part of a larger patch series that removes dict.keys()
method calls.
TrivialFix
Change-Id: I29000f1f05b90d70109fa01393e97e1ebf450c63
39e200e5eb