Remove H901,H902 since it is a duplicate of H714,H713

In pep8 1.5 H714,H713 was fixed so now H901 is a duplicate of H714 and
H902 is a duplicate of H713. So remove H901 and H902 since we now get
them directly from pep8

Change-Id: Ic01e55781d36328a03692418537b642f1f719d1b