Revert "Enabled AndroidSiteSettingsUIRefresh flag"

This reverts commit b6e4771b.

Reason for revert: The reviews from UI and Testing are still ongoing, so disabling the feature for M74.

Original change's description:
> Enabled AndroidSiteSettingsUIRefresh flag
>
> Enabling AndroidSiteSettingsUIRefresh flag after approval in Beta.
>
> Bug: 933701
> Change-Id: If6908af06f78424e3e6cecae665b2b2d2410c8bc
> Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1532227
> Reviewed-by: Balazs Engedy <engedy@chromium.org>
> Commit-Queue: Kamila Hasanbega <hkamila@google.com>
> Cr-Commit-Position: refs/heads/master@{#642905}

TBR=engedy@chromium.org,hkamila@google.com

# Not skipping CQ checks because original CL landed > 1 day ago.

Bug: 951700
Change-Id: I2e4b7f54e4fc90ab025d0794ef1592bcd9638ac9
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1563932Reviewed-by: Balazs Engedy <engedy@chromium.org>
Commit-Queue: Kamila Hasanbega <hkamila@google.com>
Cr-Commit-Position: refs/heads/master@{#649815}

chrome/browser/android/chrome_feature_list.cc

@@ -255,7 +255,7 @@ const base::Feature kAndroidSearchEngineChoiceNotification{
     "AndroidSearchEngineChoiceNotification", base::FEATURE_ENABLED_BY_DEFAULT};
 
 const base::Feature kAndroidSiteSettingsUIRefresh{
-    "AndroidSiteSettingsUIRefresh", base::FEATURE_ENABLED_BY_DEFAULT};
+    "AndroidSiteSettingsUIRefresh", base::FEATURE_DISABLED_BY_DEFAULT};
 
 const base::Feature kAndroidWebContentsDarkMode{
     "AndroidWebContentsDarkMode", base::FEATURE_DISABLED_BY_DEFAULT};