Remove ignored annotations.

HIDL never validated these, and these will be logspam/errors now (error
for interfaces where a new annotation, @SensitiveData, is important not
to have typoes, but warnings where otherwise the annotation is
inconsequential).

Bug: 173732508
Test: builds w/o warnings/errors
Change-Id: Ic95d58098fa0104a3a7f1c85644ab1a015bcdd19