Revert of Add support for $i18n{} localized strings to ios/web. (patchset #2 id:20001 of https://codereview.chromium.org/2952743002/ )

Reason for revert:
This change makes WebUITestCase.testChromeURLBackAndForwardNavigation crash.

Original issue's description:
> Add support for $i18n{} localized strings to ios/web.
>
> The html templates used for chrome:// pages have been updated with new
> i18n support using $i18n{} style strings over the older i18n-content.
>
> BUG=734079
>
> Review-Url: https://codereview.chromium.org/2952743002
> Cr-Commit-Position: refs/heads/master@{#481966}
> Committed: https://chromium.googlesource.com/chromium/src/+/dcbf479ada2b075d70ab33dfa39b5a1891539b2a

TBR=dbeam@chromium.org,michaeldo@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=734079

Review-Url: https://codereview.chromium.org/2960543002
Cr-Commit-Position: refs/heads/master@{#482133}
3 files changed