[ios] Get rid of unused DEPS rule

This removes "+net/base/mac" include DEPS rule in https_only_mode.

Bug: None
Change-Id: I1533027b385b0e890a4992555cfa5c21edfc61b6
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/5245149
Reviewed-by: Mustafa Emre Acer <meacer@chromium.org>
Commit-Queue: Tiago Vignatti <tvignatti@igalia.com>
Reviewed-by: Ali Juma <ajuma@chromium.org>
Cr-Commit-Position: refs/heads/main@{#1253428}
diff --git a/ios/components/security_interstitials/https_only_mode/DEPS b/ios/components/security_interstitials/https_only_mode/DEPS
index 8147d5d8..bb6c82d4 100644
--- a/ios/components/security_interstitials/https_only_mode/DEPS
+++ b/ios/components/security_interstitials/https_only_mode/DEPS
@@ -1,7 +1,6 @@
 include_rules = [
   "+components/security_interstitials/core",
   "+components/url_formatter",
-  "+net/base/mac",
   # For net::IsLocalhost.
   "+net/base/url_util.h",
 ]