Revert "[CrostiniPage] Link "Set up Crostini" search result to the setting"

This reverts commit dd30c5d1.

Reason for revert: only crostini related change in the blame list when crostini tests started failing

Original change's description:
> [CrostiniPage] Link "Set up Crostini" search result to the setting
> 
> Fix a bug where the "Set up Crostini" search result did not connect to
> the eponymous setting, so the setting was inaccessible for deep linking.
> 
> Bug: 1084154
> Change-Id: I0b5452425eb19203c61c8b45ba4d2d96afc16264
> Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2380749
> Reviewed-by: Kyle Horimoto <khorimoto@chromium.org>
> Commit-Queue: Daniel Classon <dclasson@google.com>
> Cr-Commit-Position: refs/heads/master@{#802704}

TBR=khorimoto@chromium.org,dclasson@google.com

Change-Id: I2ce99a8cfefe985f48196c427bc03cf3ada597db
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: 1084154, 1123194
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2382315Reviewed-by: Marijn Kruisselbrink <mek@chromium.org>
Commit-Queue: Marijn Kruisselbrink <mek@chromium.org>
Cr-Commit-Position: refs/heads/master@{#802828}

chrome/browser/ui/webui/settings/chromeos/crostini_section.cc

@@ -98,8 +98,8 @@ const std::vector<SearchConcept>& GetCrostiniOptedOutSearchConcepts() {
        mojom::kCrostiniSectionPath,
        mojom::SearchResultIcon::kPenguin,
        mojom::SearchResultDefaultRank::kMedium,
-       mojom::SearchResultType::kSetting,
-       {.setting = mojom::Setting::kSetUpCrostini},
+       mojom::SearchResultType::kSection,
+       {.section = mojom::Section::kCrostini},
        {IDS_OS_SETTINGS_TAG_CROSTINI_SETUP_ALT1, SearchConcept::kAltTagEnd}},
   });
   return *tags;