[ios] remove unused, deprecated functions

Bug: 907527
Change-Id: I346f28df9938f56b948c2f4fdbbbe427ca0fa52a
Reviewed-on: https://chromium-review.googlesource.com/c/1429981
Reviewed-by: Mark Cogan <marq@chromium.org>
Commit-Queue: David Jean <djean@chromium.org>
Cr-Commit-Position: refs/heads/master@{#625188}
2 files changed