[iOS]Remove deprecated methods from FeedSignInPromoDelegate

Those methods are not used anymore in ios_internal.

This is part of the chain
+ cl/722808388
+ crrev.com/c/6226065
+ crrev.com/i/8002548
> crrev.com/c/6227561
+ cl/722808735

Bug: 394148687, 40245722
Change-Id: Id78b0a5a206a4c496ec0e395837ca1b7647f3366
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/6227561
Commit-Queue: Arthur Milchior <arthurmilchior@chromium.org>
Reviewed-by: Rohit Rao <rohitrao@chromium.org>
Cr-Commit-Position: refs/heads/main@{#1415541}
NOKEYCHECK=True
GitOrigin-RevId: 0d6d5cc868dcc495daf78872c515c282c2cf702c
2 files changed
tree: 8137466dccaad13ce6d2d20168f51fb25a7d1b6a
  1. build/
  2. chrome/
  3. components/
  4. google_internal/
  5. intents/
  6. net/
  7. public/
  8. testing/
  9. third_party/
  10. tools/
  11. web/
  12. web_view/
  13. .swift-format
  14. BUILD.gn
  15. COMMON_METADATA
  16. DEPS
  17. DIR_METADATA
  18. features.gni
  19. OWNERS
  20. PRESUBMIT.py
  21. PRESUBMIT_test.py
  22. README.md
README.md

This directory holds code related to Chrome for iOS. See this document for a description of the structure underneath this directory.