Remove unused exceptions

Removed the exception classes in the following because not referenced
anywhere.

 -MissingArgumentError
 -NotAuthorized

Change-Id: I9f8d8e865447d772a9c09141b96075620c6d1b07
Closes-Bug: #1259818
Fix and enable gating on H702

Formatting operations should be outside of localization,
otherwise translation lookup will never find a translated
string as a match. This also fixes H701 alongway.

Change-Id: I6708e0f5b11841b18ba9042ac4958643f91396dd
assertEquals is deprecated, use assertEqual instead

Change-Id: Ie67c4c84eb74d7ed27b3c6c253239aaa1aff4862
Merge "assertEquals is deprecated, use assertEqual instead"
Merge "Fix and enable gating on H702"
Merge "Remove unused exceptions"