assistant: disable launcher assistant privacy notice

Dead code will be removed in follow-up CL.
https://chromium-review.googlesource.com/c/chromium/src/+/2567093

BUG=b:174506130

Cq-Include-Trybots: luci.chrome.try:linux-chromeos-chrome
Change-Id: I60505ad3ceb2bec51486b28271bcf96811c1c3e7
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2567255Reviewed-by: Xiaohui Chen <xiaohuic@chromium.org>
Reviewed-by: Rachel Wong <wrong@chromium.org>
Reviewed-by: Tao Wu <wutao@chromium.org>
Reviewed-by: Toni Baržić <tbarzic@chromium.org>
Commit-Queue: Jeffrey Young <cowmoo@chromium.org>
Cr-Commit-Position: refs/heads/master@{#833881}

ash/app_list/app_list_controller_impl.cc

@@ -112,12 +112,6 @@ void SetAssistantPrivacyInfoShownCount(int count) {
   prefs->SetInteger(prefs::kAssistantPrivacyInfoShownInLauncher, count);
 }
 
-bool IsAssistantPrivacyInfoDismissed() {
-  PrefService* prefs =
-      Shell::Get()->session_controller()->GetLastActiveUserPrefService();
-  return prefs->GetBoolean(prefs::kAssistantPrivacyInfoDismissedInLauncher);
-}
-
 void SetAssistantPrivacyInfoDismissed() {
   PrefService* prefs =
       Shell::Get()->session_controller()->GetLastActiveUserPrefService();
@@ -1323,19 +1317,8 @@ bool AppListControllerImpl::IsAssistantAllowedAndEnabled() const {
 }
 
 bool AppListControllerImpl::ShouldShowAssistantPrivacyInfo() const {
-  if (!IsAssistantAllowedAndEnabled())
-    return false;
-
-  if (!app_list_features::IsAssistantSearchEnabled())
-    return false;
-
-  const bool dismissed = IsAssistantPrivacyInfoDismissed();
-  if (dismissed)
-    return false;
-
-  const int count = GetAssistantPrivacyInfoShownCount();
-  constexpr int kThresholdToShow = 6;
-  return count >= 0 && count <= kThresholdToShow;
+  // TODO(b/174506130) completely remove Assistant privacy info in followup.
+  return false;
 }
 
 void AppListControllerImpl::MarkAssistantPrivacyInfoDismissed() {