Remove unused arguments in droiddoc

Nothing passes these arguments, so it's dead code.

There is a lot of other cruft in this file that is effectively
dead code, but required further cleanup.

Bug: 152479829
Test: m
Change-Id: Ib2630d4d49f21003b17e2331b0900e8df0a27e66
Merged-In: Ib2630d4d49f21003b17e2331b0900e8df0a27e66
(cherry picked from commit 0ee713aa)