Remove repeated deprecated field from SafeBrowsingExtendedReportingOptInAllowed

Bug: 1108908
Change-Id: Ia74d7c3f9e7151f365a1a5d0ce4f45d54312f672
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2315838Reviewed-by: Julian Pastarmov <pastarmovj@chromium.org>
Commit-Queue: Chris Sharp <csharp@chromium.org>
Cr-Commit-Position: refs/heads/master@{#791621}

components/policy/resources/policy_templates.json

@@ -9690,7 +9690,6 @@
       'id': 299,
       'caption': '''Allow users to opt in to Safe Browsing extended reporting''',
       'tags': [],
-      'deprecated': True,
       'desc': '''This policy is deprecated in M82 and removed in M85, use <ph name="SAFE_BROWSING_EXTENDED_REPORTING_ENABLED_POLICY_NAME">SafeBrowsingExtendedReportingEnabled</ph> instead. Disabling <ph name="SAFE_BROWSING_EXTENDED_REPORTING_OPT_IN_ALLOWED_POLICY_NAME">SafeBrowsingExtendedReportingOptInAllowed</ph> is equivalent to disabling <ph name="SAFE_BROWSING_EXTENDED_REPORTING_ENABLED_POLICY_NAME">SafeBrowsingExtendedReportingEnabled</ph>. Enabling <ph name="SAFE_BROWSING_EXTENDED_REPORTING_OPT_IN_ALLOWED_POLICY_NAME">SafeBrowsingExtendedReportingOptInAllowed</ph> or leaving this setting unset is equivalent to leaving <ph name="SAFE_BROWSING_EXTENDED_REPORTING_ENABLED_POLICY_NAME">SafeBrowsingExtendedReportingEnabled</ph> unset.
 
       Setting this policy to false stops users from choosing to send some system information and page content to Google servers. If this setting is true or not configured, then users will be allowed to send some system information and page content to Safe Browsing to help detect dangerous apps and sites.