Revert "[Custom Tabs] Implement "Read It Later" Behind a Flag"

chrome/browser/android/chrome_feature_list.cc

Index: chrome/browser/android/chrome_feature_list.cc
diff --git a/chrome/browser/android/chrome_feature_list.cc b/chrome/browser/android/chrome_feature_list.cc
index d48ebc244924412faa13b8b7092590f8365320ab..c112df19d482ab2178fc035b6cf22a01c7601e61 100644
--- a/chrome/browser/android/chrome_feature_list.cc
+++ b/chrome/browser/android/chrome_feature_list.cc
@@ -47,7 +47,6 @@ const base::Feature* kFeaturesExposedToJava[] = {
     &kNTPOfflinePagesFeature,
     &kPhysicalWebFeature,
     &kPhysicalWebIgnoreOtherClientsFeature,
-    &kReadItLaterInMenu,
     &kScanCardsInWebPayments,
     &kSpecialLocaleFeature,
     &kSpecialLocaleWrapper,
@@ -88,9 +87,6 @@ const base::Feature kPhysicalWebFeature{"PhysicalWeb",
 const base::Feature kPhysicalWebIgnoreOtherClientsFeature{
     "PhysicalWebIgnoreOtherClients", base::FEATURE_DISABLED_BY_DEFAULT};
 
-const base::Feature kReadItLaterInMenu{"ReadItLaterInMenu",
-                                       base::FEATURE_DISABLED_BY_DEFAULT};
-
 const base::Feature kScanCardsInWebPayments{"ScanCardsInWebPayments",
                                             base::FEATURE_DISABLED_BY_DEFAULT};