[ios] Removed remaining code for URL spoofing interstitials.

ios/chrome/app/strings/ios_strings.grd

Index: ios/chrome/app/strings/ios_strings.grd
diff --git a/ios/chrome/app/strings/ios_strings.grd b/ios/chrome/app/strings/ios_strings.grd
index a96923eff67ddbcc7611aecbae94b7ebdf7ffa38..9333f95ef8e92b10f35c2050e573213667f6314e 100644
--- a/ios/chrome/app/strings/ios_strings.grd
+++ b/ios/chrome/app/strings/ios_strings.grd
@@ -235,16 +235,6 @@ brand. [Length: 70em]">
 
       <!-- Safe Browsing -->

[elawrence, 2016/10/16 03:43:58]

With the removal of the spoofing strings, is this line relevant any longer?

[Eugene But (OOO till 7-30), 2016/10/24 15:57:58]

Good catch. This was not relevant even before removing Spoofing Strings. Safe
Browsing was a separate feature which is also no longer supported.

       <!-- - shared strings -->
-      <message name="IDS_IOS_INTERSTITIAL_HEADING_SPOOFING_ATTEMPT_ERROR" desc="Header error message to tell user that the requested URI might be misleading [Length: 20em]">
-        Warning: Something's Not Right Here!
-      </message>
-      <message name="IDS_IOS_INTERSTITIAL_SUMMARY_SPOOFING_ATTEMPT_ERROR" desc="Summary error message to tell user that the requested URI might be misleading [Length: unlimited]">
-        Chrome is unable to verify that the URL for this site is correct.
-      </message>
-      <message name="IDS_IOS_INTERSTITIAL_DETAILS_SPOOFING_ATTEMPT_ERROR" desc="Details error message to tell user that the requested URI might be misleading [Length: unlimited]">
-        The site you are trying to access is acting strangely, and Chrome is unable to verify that its URL is correct. For security reasons, you should not proceed, and perhaps try again tomorrow or go somewhere else.
-      </message>
-
       <message name="IDS_IOS_UPGRADE_AVAILABLE_BUTTON" desc="Displayed on a button the user can use to upgrade the a more recent version of the application. [Length: 10em]">
         Update
       </message>